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Reference Specimens
The Folch Collection

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Photos by Fabre Minerals. Under Creative Commons license

On this page we have shown the specimens that were in the Folch Collection. We didn't want to delete them from our website given their enormous historical value, as well as their quality, so we decided to save them and publish all of them on this special page, which will act as a kind of representative overview of this great collection.
We hope that you enjoy your visit, even if it is just to see this page!


Carles Curto Text: Carles Curto (former Geology Museum, Barcelona curator) & Jordi Fabre
Assistance from John S. White (former Smithsonian curator) John S. White

 


The Folch Collection

The Folch Collection was known during the period 1960-1980 as one of the best private collections in the world. It was famous worldwide for its size (more than 15,000 specimens), the quality of the specimens, the large number of classic specimens which are now almost impossible to obtain, and the style of the collection, which is surprisingly 'modern'. Sr. Folch (Joaquín Folch Girona) collected during a period when the style of most collectors in Europe consisted of gathering large specimens of rare minerals, and in which esthetics and perfection were not that important. That said he actually tended to collect smaller specimens that were esthetic and, when possible, damage free. On the death of Sr. Folch, in 1984, the collection passed to his son Alberto, and when he in turn died it went to his grandson Joaquín Folch who wisely decided to keep the collection exactly as his grandfather had it (including the display cases). So the collection was kept together and its enormous historical value has not been lost.

While I was a teenager I had the luck to have been warmly invited by Sr. Folch to visit the collection. I made numerous visits, and with him beside me I obtained an enormous amount of mineralogical information which went far beyond what I would have learned anywhere else. Given this experience I have always had a strong connection with the collection.

During my ongoing contacts with the Folch family a moment arrived when they expressed their desire to update the collection so as to make it more current - since 1984 nothing new had been added so there was a significant gap in the minerals found since then. After lots of friendly and unhurried discussions the Folch family asked me to help them with this updating process. To do this we had the good fortune that the collection included many attractive duplicates. These duplicates do not add much to the Folch collection, as there are other examples of all of them, but given their unusual localities and/or high quality they still represent good commercial specimens.

So, for the first time, some of the duplicate specimens from the Folch Collection are emerging into the sunlight. Each one of them has hand written notes made by Sr. Folch himself as well as, in many cases, his personal label and number (in the case that they were part of the major collection). The duplicates will be sold during the shows that we normally attend, and also through our web site and store in Barcelona (you need to arrange a visit beforehand, which we will try to find a way of accommodating visitors)

This project will take us a long time, as the specimens available are numerous and neither the family nor I wish to make the choices too quickly. The idea is to work slowly and select the pieces in a very systematic and careful manner. We think that given the special characteristics of the specimens that will be available and their historical value this will be a great chance for many collectors to obtain pieces that would otherwise have remained pure dreams.

We hope that little by little we can satisfy all those that wish to acquire a duplicate from the Folch collection and we can assure them that this task will give us far more pleasure than simple economic benefits. Sr. Folch was my spiritual father in mineralogical terms so handling his minerals and helping to improve his collection with new purchases is a fantastic sensation for me because the profits gained from the sale of these duplicates are used to acquire more contemporary specimens, thus satisfying the family's desire to update the collection.

I cannot thank the Folch family enough for their good faith and for their wish to improve the collection. They are helped by the undeniable support and enthusiasm of Francisco Riquelme, the current conservator of the collection, and between them they have taken a step that many people have wished them to take and that will give great joy to collectors worldwide, as well as increasing interest in and knowledge of the Folch collection in Spain and the rest of the world.

 


1926: Mineralogical Society, Jubilee Celebration.
Sr. Folch is the third from the right in the first row on foot

 

 

 


Sr. Folch holding an Apatite from Panasqueira

 

 

 

 

Typical handwritten labels from the Folch Collection

 



Typical record from the Folch Collection

 

Link to sold specimens from the Folch Collection 

USA


Arizona

Copper
Copper. Copper.

RV59H7: Extraordinary miniature. Faces and edges of the crystals have a very uncommon definition and the crystals forms are complex. Furthermore they are practically unaltered so they have an intense color and luster.
Ajo, Little Ajo Mountains, Ajo District, Pima County, Arizona  USA

Specimen size: 3.4 × 2.3 × 1.7 cm = 1.3” × 0.9” × 0.7”

Main crystal size: 0.6 × 0.5 cm = 0.2” × 0.2”

With record from the Folch Collection (duplicates)

Probably Opal intense fluorescence short UV
Cuprite (variety chalcotrichite) with Copper

RC6K4: Fibrous aggregates of excellent luster and very intense red color on laminar growths of native Copper on matrix.
Ajo, Little Ajo Mountains, Ajo District, Pima County, Arizona  USA (±1973)

Specimen size: 7.7 × 6 × 5 cm = 3.0” × 2.4” × 2.0”

With handwritten note from the Folch Collection (duplicates)

Cuprite (variety chalcotrichite) with Copper. Cuprite (variety chalcotrichite) with Copper.
Ajoite with Shattuckite
Ajoite with Shattuckite. Ajoite with Shattuckite.
Ajoite with Shattuckite

RX61M3: Well defined radially fibrous Shattuckite crystals accompanied by light blue Ajoite crystals in the small vugs of the sample (Ajoite specimens are usually massive)
One can read on the card that the specimen was purchased in 1959 from Scott J. Williams (Southwest Co.) of Scottsdale, Arizona. The piece is accompanied by a handwritten label and a card (Nr. 4988) from the Folch collection that we will send to the buyer.
New Cornelia Mine, Ajo, Little Ajo Mountains, Ajo District, Pima County, Arizona  USA (±1959)

Specimen size: 5.5 × 4.7 × 3.2 cm = 2.2” × 1.9” × 1.3”

With handwritten note & record from the Folch Collection (duplicates)

Copper

RB27I2: Dendritic growth of crystals, some of them very well defined, bright and with small coverage of Quartz.
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona  USA

Specimen size: 13.8 × 9.5 × 3 cm = 5.4” × 3.7” × 1.2”

Main crystal size: 2.1 × 0.8 cm = 0.8” × 0.3”

With handwritten note from the Folch Collection (duplicates)

Copper. Copper.
Cuprite with Copper
Cuprite with Copper.

RF13S7: Small crystals of Cuprite on an arborescent growth of native Copper. They are very sharp, with a dominant octahedron modified by smaller cube faces and are intensely sherry red and very bright.
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona  USA (±1964)

Specimen size: 1.7 × 1.3 × 0.8 cm = 0.7” × 0.5” × 0.3”

With handwritten note from the Folch Collection (duplicates)

Cuprite with Copper
Cuprite with Copper

RG60AE6: Aggregates of small cubo-octahedral Cuprite crystals that are very bright, with dendritic growths of octahedral native Copper crystals. Both this kind of sample and the locality are American classics.
The sample is from the Joaquín Folch duplicates collection, whose label we’ll send to the buyer.
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona  USA

Specimen size: 8.2 × 4.2 × 1.8 cm = 3.2” × 1.7” × 0.7”

Main crystal size: 0.2 × 0.2 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Cuprite with Copper. Front
Front
Cuprite with Copper. Rear
Rear
Cuprite with Copper.
Cuprite
Cuprite. Cuprite.

RD96V0: Arborescent growths of copper covered by cubic crystals of Cuprite, translucent, bright and vivid red in color. Of excellent quality for the locality, a great North American classic.
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona  USA (±1964)

Specimen size: 9.3 × 6 × 1.5 cm = 3.7” × 2.4” × 0.6”

Main crystal size: 0.2 × 0.2 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Cuprite (Chalcotrichite) with Copper
Cuprite (Chalcotrichite) with Copper

RD47R6: Coatings of feltlike crystals of Chalcotrichite, with very intense luster and red color, on a dendritic growth of flattened crystals of native Copper on matrix. An U.S. classic that Folch acquired in 1971 from the well known Swiss dealers Siber + Siber.
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona  USA (±1971)

Specimen size: 10.6 × 8 × 4.1 cm = 4.2” × 3.1” × 1.6”

With handwritten note from the Folch Collection (duplicates)

Cuprite (Chalcotrichite) with Copper. Front
Front
Cuprite (Chalcotrichite) with Copper. Rear
Rear
Cuprite (Chalcotrichite) with Copper.
Cuprite (Chalcotrichite) with Copper
Cuprite (Chalcotrichite) with Copper. Front
Front
Cuprite (Chalcotrichite) with Copper. Rear
Rear
Cuprite (Chalcotrichite) with Copper.
Cuprite (Chalcotrichite) with Copper

RH47K8: Small but numerous groups of fibrous Cuprite crystals (Chalcotrichite), very bright and vivid red in color, on laminar growths of native Copper on matrix. The locality, a classic for Chalcotrichite (and for native Copper), makes this specimen even more interesting.
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona  USA (±1971)

Specimen size: 12.2 × 7.4 × 4 cm = 4.8” × 2.9” × 1.6”

With handwritten note from the Folch Collection (duplicates)

Copper with Cuprite

RP38F8: Aerial growth of crystals of Cuprite (cube + dodecahedra) with slightly curved edges and on a matrix of native copper crystals. It was a 1961 gift from Mr. Albert Haag, of Tucson, as shown on the record for this one.
Bisbee, Warren District, Mule Mountains, Cochise County, Arizona  USA (±1961)

Specimen size: 3.4 × 2.3 × 1.9 cm = 1.3” × 0.9” × 0.7”

Main crystal size: 0.6 × 0.4 cm = 0.2” × 0.2”

With handwritten note & record from the Folch Collection (duplicates)

Copper with Cuprite.
Copper with Cuprite.
Copper
Copper.

RL64L9: A miniature from a classic locality. Arborescent growth of Copper crystals, some of them well defined.
The piece is accompanied by a handwritten label from the Folch collection that we will send to the buyer.
Bisbee, Warren District, Mule Mountains, Cochise County, Arizona  USA

Specimen size: 3.5 × 2.4 × 2.3 cm = 1.4” × 0.9” × 0.9”

With handwritten note from the Folch Collection (duplicates)

Fluorescent short UV
Cuprite with Copper
Cuprite with Copper

RA60V0: Groups of small octahedral crystals of Cuprite with sharp faces and edges and with intense red color. They are on a matrix of massive Cuprite and with thick growths of Copper.
With a label of the legendary company Foote that we'll send to the buyer.
Copper Queen Mine, Queen Hill, Bisbee, Warren District, Mule Mountains, Cochise County, Arizona  USA (±1952)

Specimen size: 6.1 × 3.6 × 3.1 cm = 2.4” × 1.4” × 1.2”

Main crystal size: 0.3 × 0.3 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Cuprite with Copper.
Cuprite with Copper. Cuprite with Copper.
Calcite with Brochantite
Calcite with Brochantite.
Calcite with Brochantite

RB59M3: Group of complex Calcite crystals, translucent and with a intense brilliance, accompanied by centered acicular green Brochantite crystal growths.
This sample was purchased from Hugh A. Ford, of New York, in 1959. The piece is accompanied by a handwritten label and a card (Nr. 2974) from the Folch Collection.
Bisbee, Warren District, Mule Mountains, Cochise County, Arizona  USA (±1959)

Specimen size: 3.7 × 3.3 × 2.7 cm = 1.5” × 1.3” × 1.1”

Main crystal size: 0.7 × 0.6 cm = 0.3” × 0.2”

With handwritten note & record from the Folch Collection (duplicates)

Minor fluorescence long & short UV
Wulfenite with Mimetite
Wulfenite with Mimetite

RJ38H0: A group of laminar crystals of intense orange-yellow color, very bright and partially covered by orange Mimetite. The mine is now an American classic. The piece has an important “pedigree” because it has a label showing a double provenance: The Scott J. Williams collection, of Arizona, and the C.J. Hansen collection where the piece was originally.
Mammoth-St. Anthony Mine, St. Anthony deposit, Tiger, Mammoth District, Pinal County, Arizona  USA (±1957)

Specimen size: 7.2 × 6.3 × 3.8 cm = 2.8” × 2.5” × 1.5”

Main crystal size: 1.3 × 1.2 cm = 0.5” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Wulfenite with Mimetite. Front
Front
Wulfenite with Mimetite. Rear
Rear
Dioptase with Wulfenite
Dioptase with Wulfenite.
Dioptase with Wulfenite.

RB27F8: From the Mammoth Mine, no less! A group of Dioptase crystals with magnificent color, on matrix, and with the rare feature of some Wulfenite.
Mammoth-St. Anthony Mine, St. Anthony deposit, Tiger, Mammoth District, Pinal County, Arizona  USA (±1959)

Specimen size: 3.3 × 2.4 × 1.8 cm = 1.3” × 0.9” × 0.7”

With handwritten note & record from the Folch Collection (duplicates)

Calcite fluorescent long & short UV
Wulfenite
Wulfenite

RL87F8: A classic from the Red Cloud Mine. Two crystals that have excellent brilliance and color and that are on matrix. From the 1970s finds, which is when he bought it.
Red Cloud Mine, Trigo Mts, Silver District, La Paz County, Arizona  USA

Specimen size: 2.5 × 2 × 1.5 cm = 1.0” × 0.8” × 0.6”

With handwritten note & record from the Folch Collection (duplicates)

Wulfenite.

California

Linarite
Linarite. Linarite.
Linarite

RP63M0: Uncommon specimen from a classic locality formed by small acicular and bladed Linarite crystals on matrix.
The specimen is accompanied by a Lidstrom’s label.
Blue Bell Mine, Baker, Soda Lake Mountains, San Bernardino County, California  USA

Specimen size: 5.8 × 4.4 × 2.5 cm = 2.3” × 1.7” × 1.0”

Main crystal size: 0.5 × 0.1 cm = 0.2” × 0.0”

With handwritten note from the Folch Collection (duplicates)

Caledonite with Linarite
Caledonite with Linarite

RB18G2: A sample from a very uncommon locality that we must not confuse with the better known Mammoth-St. Anthony mine. Caledonite, greenish-blue and vitreous, is with Linarite and they are very abundant on the Limonite matrix. This specimen was purchased from Burminco (George Burnham)
Baker, Soda Lake Mountains, San Bernardino County, California  USA (±1955)

Specimen size: 8 × 6.3 × 5.2 cm = 3.1” × 2.5” × 2.0”

With handwritten note & record from the Folch Collection (duplicates)

Caledonite with Linarite.
Caledonite with Linarite. Caledonite with Linarite.
Elbaite
Elbaite. Front
Front
Elbaite. Rear
Rear
Elbaite

RC48M2: Very well defined Elbaite, very transparent, with extraordinary colors ranging from a lively red to intense pink from the middle to the upper perfect terminal faces. The specimen which by its aspect does not seem, at first glance, from Pala, is accompanied by a handwritten note from Sr. Folch where one can read that it was collected in Pala (California) by Sr. Folch in person, in 1974, so we give credence to the locality.
Pala Chief Mine, Chief Mountain, Pala, Pala District, San Diego County, California  USA (02/1974)

Specimen size: 4.1 × 1.4 × 1.2 cm = 1.6” × 0.6” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Elbaite (variety rubellite) with Quartz

RA36Z4: Radiating aggregates on a Quartz matrix of bright translucent crystals with an intense pink color. Really an "oldie" from Pala, typical of the end of the 70's.
Pala District, San Diego County, California  USA (±1973)

Specimen size: 7.2 × 5.3 × 2.8 cm = 2.8” × 2.1” × 1.1”

Main crystal size: 3.4 × 0.3 cm = 1.3” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Elbaite (variety rubellite) with Quartz.
Spodumene (variety kunzite)
Spodumene (variety kunzite). Front
Front
Spodumene (variety kunzite). Top
Top

FA47K0: Floater doubly terminated crystal with dissolution forms and anomaly growths. Its color is exceptionally intense. The original label notes that the specimen was sold to Sr. Folch by Mr. Bouest (or Bouert), from Los Angeles, October 1962.
Pala Chief Mine, Chief Mountain, Pala, Pala District, San Diego County, California  USA (±1962)

Specimen size: 4.1 × 4 × 2.5 cm = 1.6” × 1.6” × 1.0”

With record from the Folch Collection (duplicates)

Minor fluorescence with long & short UV
Spodumene (variety kunzite)

RC13K9: Floater and doubly terminated Spodumene crystal with multiple terminations at both ends. Pink color, with a strong dichroism.
Pala Chief Mine, Chief Mountain, Pala, Pala District, San Diego County, California  USA (±1962)

Specimen size: 5.2 × 2.8 × 1.2 cm = 2.0” × 1.1” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence long & short UV
Spodumene (variety kunzite). Front
Front
Spodumene (variety kunzite). Rear
Rear
Spodumene (variety kunzite)
Spodumene (variety kunzite). Front
Front
Spodumene (variety kunzite). Rear
Rear

FB36K0: Floater doubly terminated crystal with rounded terminations. The color is good and especially intense on the extremities of the crystal.
Pala Chief Mine, Chief Mountain, Pala, Pala District, San Diego County, California  USA (±1962)

Specimen size: 5.7 × 2.8 × 1.3 cm = 2.2” × 1.1” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence with long & short UV
Rutile

TY11I8: Prismatic crystal with very well defined faces and edges. It is sharp, bright and dark brown.
Champion Mine, White Mountain Peak, White Mountains, Mono County, California  USA (±1959)

Specimen size: 1.5 × 1.5 × 1.3 cm = 0.6” × 0.6” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Rutile.
Rutile
Rutile.

TX10I8: Prismatic crystal with very well-defined faces and edges. It has translucent reddish zones. The crystal is partially covered by matrix.
Champion Mine, White Mountain Peak, White Mountains, Mono County, California  USA (±1959)

Specimen size: 1.7 × 1.3 × 1.4 cm = 0.7” × 0.5” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Inesite
Inesite

RP49J1: Specimen of good color and good crystallization from this locality, classic for Inesite.
The specimen is accompanied by a Lidstrom’s label.
Hale Creek Mine, Mad River Rock, Coastal Range, Trinity County, California  USA (±1973)

Specimen size: 6.8 × 5.8 × 3.4 cm = 2.7” × 2.3” × 1.3”

Main crystal size: 1.5 × 0.8 cm = 0.6” × 0.3”

With handwritten note from the Folch Collection (duplicates)

Inesite.
Inesite.
Andradite
Andradite.
Andradite

RE16G6: Crystals reach a considerable size and have an excellent luster. They show equal development of rhombohedral and trapezohedral forms, with some other faces of the cubic system. One of the crystals has a contact on one of its faces. A good sample from this classic American locality.
Calaveras County, California  USA (±1958)

Specimen size: 4.7 × 3.7 × 2.9 cm = 1.9” × 1.5” × 1.1”

Main crystal size: 3.4 × 2.7 cm = 1.3” × 1.1”

With handwritten note & record from the Folch Collection (duplicates)

Cristobalite with Tridymite and Fayalite on Obsidian
Cristobalite  with Tridymite and Fayalite on Obsidian

RP96S7: Small olive green laminar crystals of Fayalite in a spherical nodule of Cristobalite with Tridymite included in obsidian. The crystals have not been analyzed but the attribution is supported by an original label from Burminco (George Burnham), that we consider trustworthy.
Coso Hot Springs deposit, Coso Hot Springs, Coso District, Inyo County, California  USA (±1964)

Specimen size: 7.2 × 4.5 × 4.7 cm = 2.8” × 1.8” × 1.9”

With handwritten note from the Folch Collection (duplicates)

Cristobalite  with Tridymite and Fayalite on Obsidian. Cristobalite  with Tridymite and Fayalite on Obsidian.
Axinite-(Fe) with Amphibole
Axinite-(Fe) with Amphibole. Front
Front
Axinite-(Fe) with Amphibole. Rear
Rear

RE61M5: Sharp crystals, brown with mauve shades, with an indeterminate amphibole that forms aggregates of acicular green crystals. We investigated the locality to document it more precisely but we haven’t found more details or similar comparative material, so we retain the name furnished by Folch documentation.
Mariposa County, California  USA

Specimen size: 3.7 × 3 × 3.5 cm = 1.5” × 1.2” × 1.4”

Main crystal size: 3 × 1.4 cm = 1.2” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Lawsonite
Lawsonite

RX14G2: An old sample from a very uncommon locality that we must not confuse with the type locality (Tiburon Peninsula). Pink crystals are well developed on a Glaucophane matrix. The sample was collected by Scott J. Williams (Scottsdale, Arizona) in 1948 and it was purchased from him by Folch in 1961.
Valley Ford, Sonoma County, California  USA (1948)

Specimen size: 3.5 × 3.2 × 3 cm = 1.4” × 1.3” × 1.2”

Main crystal size: 0.7 × 0.6 cm = 0.3” × 0.2”

With handwritten note & record from the Folch Collection (duplicates)

Lawsonite.
Artinite
Artinite. Artinite.
Artinite

RT14Z4: Globular growths of white, silky and bright Artinite crystals coating an Antigorite (variety serpentine) matrix.
Artinite Pit, Clear Creek, Picacho Peak, New Idria District, Diablo Range, San Benito County, California  USA (±1965)

Specimen size: 7.5 × 6.5 × 4.1 cm = 3.0” × 2.6” × 1.6”

With handwritten note & record from the Folch Collection (duplicates)

Minor fluorescence short UV


Colorado

Rhodochrosite with Quartz

RE87H0: A nice group of lenticular crystals with scaled surface, very typical of the historic find in the American Tunnel mine. They are partially covered by micro-crystals of Quartz and their color and luster are magnificent.
Sunnyside Mine group (American Tunnel Mine), Bonita Peak, Gladstone, Eureka District, San Juan County, Colorado  USA (±1966)

Specimen size: 2.8 × 2.6 × 1.9 cm = 1.1” × 1.0” × 0.7”

Main crystal size: 1.2 × 0.6 cm = 0.5” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Rhodochrosite with Quartz.
Rhodochrosite with Quartz
Rhodochrosite with Quartz.

RA46H0: Two rhombohedral crystals with very sharp faces and edges on a white matrix of small Quartz crystals. Color is good for the locality which we must point out is historic.
Sunnyside Mine group (American Tunnel Mine), Bonita Peak, Gladstone, Eureka District, San Juan County, Colorado  USA (±1966)

Specimen size: 3.5 × 2 × 1.5 cm = 1.4” × 0.8” × 0.6”

Main crystal size: 1.8 × 1.6 cm = 0.7” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Rhodochrosite on Quartz

RB97F9: Spheroidal aggregates of lenticular crystals with an intense pink color, contrast with the white Quartz matrix. The Color and brightness are better than usual in the samples from this historical mine.
Sunnyside Mine group (American Tunnel Mine), Bonita Peak, Gladstone, Eureka District, San Juan County, Colorado  USA

Specimen size: 5 × 3.3 × 2 cm = 2.0” × 1.3” × 0.8”

Main crystal size: 1.2 × 1.1 cm = 0.5” × 0.4”

With handwritten note & record from the Folch Collection (duplicates)

Rhodochrosite on Quartz.
Rhodochrosite on Quartz.
Microcline (variety amazonite)
Microcline (variety amazonite). Front
Front
Microcline (variety amazonite). Top
Top
Microcline (variety amazonite)

RA38F9: In this single crystal the color is magnificent, and the faces are exceptionally well-developed.
Pikes Peak, El Paso County, Colorado  USA (±1926)

Specimen size: 4.5 × 3.9 × 4.3 cm = 1.8” × 1.5” × 1.7”

With handwritten note & record from the Folch Collection (duplicates)

Topaz

RY96M2: A colorless topaz specimen with an irregular growth but with well defined faces and edges. We would like to emphasize the locality, very unusual for good sized Topaz crystals.
Pikes Peak, El Paso County, Colorado  USA

Specimen size: 5.6 × 3.7 × 1.4 cm = 2.2” × 1.5” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Topaz.
Hübnerite
Hübnerite. Front
Front
Hübnerite. Rear
Rear
Hübnerite.

RK70H0: An excellent classic, with very sharp crystals in groups of parallel growths, with the best color and luster and an esthetic contrast with the snowy white matrix. A very difficult specimen to find today.
Adams Mine, Cement Creek, Silverton, Eureka District, San Juan County, Colorado  USA

Specimen size: 5.1 × 3.4 × 4.5 cm = 2.0” × 1.3” × 1.8”

Main crystal size: 3 × 1.6 cm = 1.2” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Hübnerite with Quartz
Hübnerite with Quartz

RT89J1: Specimen from a classic locality, very different from those from other well known localities for Hübnerite. Crystals are extraordinarily flat and bright and form almost leafy aggregates. The color is bronze-red, typical of its place of origin and contrasts with the white concretions of Quartz.
Adams Mine, Cement Creek, Silverton, Eureka District, San Juan County, Colorado  USA (±1955)

Specimen size: 8.7 × 6.5 × 3.5 cm = 3.4” × 2.6” × 1.4”

With handwritten note from the Folch Collection (duplicates)

Hübnerite with Quartz. Front
Front
Hübnerite with Quartz. Rear
Rear
Hummerite
Hummerite.
Hummerite

RK64J1: The specimen, from the type locality, is very representative of this rare vanadate. It forms deep orange microcrystals on matrix.
We will send the label of the sample, from Minerals Unlimited, Berkeley, California, to the buyer.
Hummer Mine, Paradox Valley, Uravan District, Montrose County, Colorado  USA (±1959)

Specimen size: 4.6 × 4.6 × 2.2 cm = 1.8” × 1.8” × 0.9”

With handwritten note from the Folch Collection (duplicates)


New Jersey

Datolite with Quartz and Pectolite
Datolite with Quartz and Pectolite

RB64N4: Group of well defined, bright crystals of good color with fibrous aggregates of Pectolite on the back of the piece. It is from a classic American locality.
The sample is with the label of John S. Albanese, (Union, New Jersey) that we'll send to the buyer.
Woodland Park, Passaic County, New Jersey  USA

Specimen size: 4.2 × 3.9 × 2.2 cm = 1.7” × 1.5” × 0.9”

Main crystal size: 0.8 × 0.5 cm = 0.3” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Datolite with Quartz and Pectolite. Datolite with Quartz and Pectolite.
Datolite
Datolite.
Datolite

RH63M2: Group of well defined Datolite crystals, very rich in faces, with a light green color and huge size for the locality, a classic for the species.
Woodland Park, Passaic County, New Jersey  USA

Specimen size: 5.4 × 3.7 × 2.1 cm = 2.1” × 1.5” × 0.8”

Main crystal size: 2.9 × 1.7 cm = 1.1” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Datolite with Chalcopyrite
Datolite with Chalcopyrite

RF56K0: Group of crystals with very sharp faces and edges of green color deeper than usual on the samples from this locality, classic for the species. On the surface of Datolite there are small crystals of Chalcopyrite.
Upper New Street Quarry, Paterson, Passaic County, New Jersey  USA (±1965)

Specimen size: 8.3 × 6.2 × 4.1 cm = 3.3” × 2.4” × 1.6”

Main crystal size: 1.8 × 1 cm = 0.7” × 0.4”

With handwritten note from the Folch Collection (duplicates)

Datolite with Chalcopyrite. Datolite with Chalcopyrite.
Rhodonite
Rhodonite.
Rhodonite.
Rhodonite

RA26H7: Group of prismatic crystals of very well defined faces and edges and a good color, locally with octahedral crystals of Franklinite. Specimens like this are very hard to find.
Franklin, Franklin Mining District, Sussex County, New Jersey  USA (±1970)

Specimen size: 9.3 × 5 × 5.5 cm = 3.7” × 2.0” × 2.2”

Main crystal size: 2.9 × 0.8 cm = 1.1” × 0.3”

With record from the Folch Collection (duplicates)

Willemite (Troostite)
Willemite (Troostite)

RM61N4: Very well defined, floater and doubly terminated crystal that has good color. An American classic.
Franklin, Franklin Mining District, Sussex County, New Jersey  USA

Specimen size: 2.5 × 2.2 × 1.6 cm = 1.0” × 0.9” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Intense fluorescence short UV & fluorescent long UV
Willemite (Troostite).
Zincite with Franklinite and Willemite
Zincite with Franklinite and Willemite. Front
Front
Zincite with Franklinite and Willemite. Side
Side
Zincite with Franklinite and Willemite

RQ14T8: Crystalline and nodular growths typical of the Zincite samples from Franklin. They have a very deep red color, are bright and are with octahedral crystals of Franklinite and with Willemite.
The sample is with a label from Siber+Siber with handwritten notes of Folch that we’ll send to the buyer.
Franklin, Franklin Mining District, Sussex County, New Jersey  USA (±1970)

Specimen size: 4.9 × 4.3 × 6 cm = 1.9” × 1.7” × 2.4”

With handwritten note from the Folch Collection (duplicates)

Willemite very fluorescent long & short UV

Epidote with Quartz
Epidote with Quartz

RL13M2: Doubly terminated Epidote crystal, with parallel growths and very sharp faces and edges. With small Quartz crystals.
Green Monster Mountain, Prince of Wales Island, Ketchikan District, Prince of Wales-Outer Ketchikan Borough, Alaska  USA (±1954)

Specimen size: 3.6 × 2.1 × 2 cm = 1.4” × 0.8” × 0.8”

Main crystal size: 3.6 × 1.7 cm = 1.4” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Epidote with Quartz.
Epidote with Quartz
Epidote with Quartz.
Epidote with Quartz.

RZ8F8: A Prince of Wales classic. The long crystals of Epidote, apart from the perfect development of the faces, have a good degree of translucence and contrast with the numerous crystals of Quartz. Folch bought this from Al McGuinness in 1972 at Tucson.
Copper Mountain, Prince of Wales Island, Ketchikan District, Prince of Wales-Outer Ketchikan Borough, Alaska  USA (±1972)

Specimen size: 6 × 5 × 3.3 cm = 2.4” × 2.0” × 1.3”

Main crystal size: 3.8 × 1.6 cm = 1.5” × 0.6”

With handwritten note & record from the Folch Collection (duplicates)

Twinned Rutile

RC37F8: A magnificent cyclic twin from the classic Magnet Cove locality. The perfect twin! A floater as the base has recrystallized. The typed Schortmann’s Minerals label also has some handwritten notes made by Folch.
Magnet Cove, Hot Spring County, Arkansas  USA (±1956)

Specimen size: 2.6 × 2.4 × 2.9 cm = 1.0” × 0.9” × 1.1”

With handwritten note & record from the Folch Collection (duplicates)

Twinned Rutile.
Grossular with Calcite
Grossular with Calcite.

RG86G0: Crystals have the dodecahedral form and they are bright and sharp, standing on a Calcite matrix.
The specimen proceeds from the A. Santos collection and it passed to Folch collection in 1952.
Phippsburg, Sagadahoc County, Maine  USA

Specimen size: 5.3 × 4.7 × 3 cm = 2.1” × 1.9” × 1.2”

Main crystal size: 1.3 × 0.9 cm = 0.5” × 0.4”

With handwritten note & record from the Folch Collection (duplicates)

Beryllonite
Beryllonite

RA97F8: From the type locality for this rare species. While not well-defined (as is typical for Beryllonite) one can see the faces of the crystal, which is notable for its transparency. A floater.
Stoneham, Oxford County, Maine  USA (±1965)

Specimen size: 2.1 × 1.8 × 1 cm = 0.8” × 0.7” × 0.4”

With handwritten note & record from the Folch Collection (duplicates)

Type locality
Beryllonite.
Datolite
Datolite.

RD16M2: Very uncommon locality not well represented in collections. Group of well defined Datolite crystals, with a light green color and good luster for the species. The specimen was from the former Scott J. Williams collection and we’ll send this label, which contains some handwritten notes from Mr. Folch, to the buyer.
Hampden Quarry, West Springfield, Hampden County, Massachusetts  USA (±1961)

Specimen size: 4.4 × 3.8 × 3.6 cm = 1.7” × 1.5” × 1.4”

Main crystal size: 3.7 × 2 cm = 1.5” × 0.8”

With handwritten note from the Folch Collection (duplicates)

Copper

RP56G0: In the group, the crystals show especially sharp crystal faces. The surface of the faces had resisted the passage of time and they are practically free of any alteration.
Lake Superior, Keweenaw County, Michigan  USA

Specimen size: 2.6 × 1.7 × 1.5 cm = 1.0” × 0.7” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Copper.
Enargite with Pyrite
Enargite with Pyrite.

RE36G0: A classic specimen. Prisms of Enargite contrast with complex crystals of Pyrite showing clearly the octahedron and pyritohedron faces.
Folch purchased the specimen directly in Butte, Montana, in 1955.
Butte, Butte District, Silver Bow County, Montana  USA (±1955)

Specimen size: 3.2 × 3.1 × 2 cm = 1.3” × 1.2” × 0.8”

With handwritten note from the Folch Collection (duplicates)

Enargite with Pyrite

RT36G0: The prisms of Enargite, very bright, contrast with octahedral crystals of Pyrite with a modest development of pyritohedron faces.
Folch purchased the specimen directly in Butte, Montana, in 1955.
Butte, Butte District, Silver Bow County, Montana  USA (±1955)

Specimen size: 3.5 × 3.3 × 2 cm = 1.4” × 1.3” × 0.8”

With handwritten note & record from the Folch Collection (duplicates)

Enargite with Pyrite.
Enargite with Pyrite
Enargite with Pyrite.

RR14K9: Group of prismatic crystals with well defined faces and edges and good luster. On matrix with small octahedral Pyrite crystals.
Butte, Butte District, Silver Bow County, Montana  USA

Specimen size: 4.5 × 3.4 × 2.5 cm = 1.8” × 1.3” × 1.0”

Main crystal size: 1.0 × 1.0 cm = 0.4” × 0.4”

With handwritten note from the Folch Collection (duplicates)

Enargite with Pyrite and Quartz

RE27R6: A U.S. classic with sharp prismatic crystals of Enargite, bright and with excellent terminations. On matrix, with Pyrite and Quartz.
Butte, Butte District, Silver Bow County, Montana  USA

Specimen size: 6 × 5.2 × 3.4 cm = 2.4” × 2.0” × 1.3”

Main crystal size: 0.6 × 0.5 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Enargite with Pyrite and Quartz. Enargite with Pyrite and Quartz.
Olivenite with Pitticite
Olivenite with Pitticite.
Olivenite with Pitticite.
Olivenite with Pitticite

RX92M0: Classic acicular olive green Olivenite crystals, very bright, and on a rocky matrix with Pitticite. This specimen is accompanied by a handwritten Folch label and the collection card (Nr. 7344).
Majuba Hill Mine, Antelope District, Pershing County, Nevada  USA (±1961)

Specimen size: 5.8 × 3.3 × 2.8 cm = 2.3” × 1.3” × 1.1”

Main crystal size: 0.4 × 0.1 cm = 0.2” × 0.0”

With handwritten note & record from the Folch Collection (duplicates)

Axinite-(Mn)
Axinite-(Mn)

RQ16M5: The crystal, from an uncommon locality, is on matrix and, even being poorly defined, it is of the species Axinite-(Mn), considerably less common than Axinite-(Fe).
The specimen is with a label from John S. Albanese, that will be sent to the buyer.
Luning area, Mineral County, Nevada  USA

Specimen size: 5.1 × 4.2 × 2.6 cm = 2.0” × 1.7” × 1.0”

With handwritten note from the Folch Collection (duplicates)

Axinite-(Mn).
Herderite
Herderite.
Herderite

RE67F8: A rarity. The crystal, even though it is not well terminated on the rear, is well developed and is quite large for the locality, which in turn is a classic one for US mineralogy. It is a floater.
Rumney, Grafton County, New Hampshire  USA (±1967)

Specimen size: 3 × 2 × 1.5 cm = 1.2” × 0.8” × 0.6”

With handwritten note & record from the Folch Collection (duplicates)

Hewettite on Gypsum

RJ36F8: A superb formation of fibrous crystals that have hints of gold and bronze and are on gypsum. Collected by Sr. Folch in October 1959.
Homestake Mine, Ambrosia Lake area, Grants District, McKinley County, New Mexico  USA (1959)

Specimen size: 4.4 × 4.1 × 1.9 cm = 1.7” × 1.6” × 0.7”

With handwritten note & record from the Folch Collection (duplicates)

Hewettite on Gypsum.
Linarite with Quartz
Linarite with Quartz. Front
Front
Linarite with Quartz. Rear detail
Rear detail

RF11M2: From one of the classic localities for the species. Concretions and small flattened crystals (in the vug on the back side of the specimen) with an intense and characteristic blue color, all on a Quartz matrix.
Bingham, Hansonburg District, Socorro County, New Mexico  USA (±1959)

Specimen size: 5.3 × 3.2 × 1.8 cm = 2.1” × 1.3” × 0.7”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”

With handwritten note from the Folch Collection (duplicates)

Uvite (Series)
Uvite (Series)

RZ62M0: This crystal, from a classic locality from the New York state, is formed by a short prism and the terminal flattened rhombohedron faces, which are well defined and show a good luster. Although it looks damaged in two places, one of them is a natural hole with crystal faces inside. The other one effectively is a ding.
This specimen was bought by Mr. Folch in 1959 and it is accompanied by a handwritten label and the collection card (Nr. 5060)

Pierrepont, St. Lawrence County, New York  USA (±1959)

Specimen size: 3.8 × 3.5 × 3.2 cm = 1.5” × 1.4” × 1.3”

With handwritten note & record from the Folch Collection (duplicates)

Uvite (Series). Front
Front
Uvite (Series). Rear
Rear
Zircon
Zircon.

RT8N4: Small but very well defined and doubly terminated crystal, formed by the faces of the prism and of a dipyramid. We apologize for not offering more information about the locality. The original manuscript label simply indicates North Carolina.
North Caroline, North Carolina  USA

Specimen size: 0.8 × 0.6 × 0.5 cm = 0.3” × 0.2” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Intense fluorescence short UV & fluorescent long UV
Sphalerite with Pyrite and Marcasite
Sphalerite with Pyrite and Marcasite

RX96P8: From a classic American locality. The Sphalerite crystals are complex with deep red color and good transparency. These crystals were named "Ruby Jack". They are implanted on a very thin matrix and are partially coated by sharp, well defined, crystals of Marcasite. Folch's records indicate that the sample was acquired in Tucson in 1959.
Picher Field, Tri-State District, Ottawa County, Oklahoma  USA (±1959)

Specimen size: 10.8 × 8.3 × 2.9 cm = 4.3” × 3.3” × 1.1”

Main crystal size: 3.6 × 2.9 cm = 1.4” × 1.1”

With handwritten note & record from the Folch Collection (duplicates)

Sphalerite with Pyrite and Marcasite.
Sphalerite with Pyrite and Marcasite. Sphalerite with Pyrite and Marcasite.

MEXICO - CANADA


Mexico

Axinite-(Fe)
Axinite-(Fe).
Axinite-(Fe)

RA58N4: The locality, due to its rarity, is the most notable about this piece which has an excellent color.
With a label from Shale`s(Los Angeles) that we'll send to the buyer.
Trinidad, Baja California  Mexico

Specimen size: 5.7 × 3.5 × 1 cm = 2.2” × 1.4” × 0.4”

With handwritten note from the Folch Collection (duplicates)

Vesuvianite

RL10P8: The single crystal is better defined than usual for this classic Mexican locality. Its morphology, perfectly distinct, consists of two prisms and a dipyramid, incomplete in the lower part of the crystal.
Sierra de las Cruces, Sierra Mojada mining district, Municipio Sierra Mojada, Coahuila (Coahuila de Zaragoza)  Mexico (±1970)

Specimen size: 2.6 × 1.5 × 1.7 cm = 1.0” × 0.6” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Vesuvianite.
Vesuvianite
Vesuvianite.

RK60M9: Floater and doubly terminated crystal of very well defined faces and edges. It is formed by two prisms 45 degrees to each other, and a dipyramid.
Sierra de las Cruces, Sierra Mojada mining district, Municipio Sierra Mojada, Coahuila (Coahuila de Zaragoza)  Mexico (±1970)

Specimen size: 2.9 × 2.1 × 1.9 cm = 1.1” × 0.8” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Doubly terminated Vesuvianite

RC63P8: A single equidimensional Vesuvianite crystal of yellowish brown color. Its cubical aspect is due to two short prisms and a dipyramid plus the terminal pinacoid. On the surface of some of its faces there are small groups of dodecahedral crystals of Grossular.
Sierra de las Cruces, Sierra Mojada mining district, Municipio Sierra Mojada, Coahuila (Coahuila de Zaragoza)  Mexico

Specimen size: 3.1 × 3 × 3.1 cm = 1.2” × 1.2” × 1.2”

With handwritten note from the Folch Collection (duplicates)

Doubly terminated Vesuvianite.
Vesuvianite with Grossular
Vesuvianite with Grossular. Front
Front
Vesuvianite with Grossular. Top
Top

RN16K9: A group of Vesuvianite crystals from a classic locality, with well defined faces and edges, most of them doubly terminated. They are formed by two prisms and a pyramid on the terminal faces.
Sierra de las Cruces, Sierra Mojada mining district, Municipio Sierra Mojada, Coahuila (Coahuila de Zaragoza)  Mexico (±1970)

Specimen size: 4.8 × 3.5 × 2.8 cm = 1.9” × 1.4” × 1.1”

Main crystal size: 2.8 × 1.6 cm = 1.1” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Grossular

RK16G2: A group of dodecahedral crystals perfectly defined, with a good luster and a color quite different than usual for the Grossular from this locality.
Sierra de las Cruces, Sierra Mojada mining district, Municipio Sierra Mojada, Coahuila (Coahuila de Zaragoza)  Mexico

Specimen size: 3.1 × 3 × 2.9 cm = 1.2” × 1.2” × 1.1”

With handwritten note from the Folch Collection (duplicates)

Grossular.
Polybasite with Chalcopyrite and Quartz
Polybasite with Chalcopyrite and Quartz. Front
Front
Polybasite with Chalcopyrite and Quartz. Top
Top
Polybasite with Chalcopyrite and Quartz

RD46H3: Group of very sharp laminar crystals with very marked triangular growth figures on the pinacoid faces. Chalcopyrite growths and small white crystals of Quartz enhance the esthetics of the specimen.
The specimen is accompanied by a Lidstrom’s label, and we will give the buyer also a copy of the analysis of the Polybasite.
Chihuahua  Mexico

Specimen size: 2.8 × 2.7 × 2.4 cm = 1.1” × 1.1” × 0.9”

With handwritten note from the Folch Collection (duplicates)

Pyrrhotite with Dolomite
Pyrrhotite with Dolomite

RA46L9: Group of prismatic Pyrrhotite crystals with excellent terminations, partially covered by small Dolomite crystals.
The piece is accompanied by a handwritten label and a card (nr. 9812) from the Folch Collection, where we can read that it was purchased in 1966.
Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (1966)

Specimen size: 12.6 × 7.4 × 4.4 cm = 5.0” × 2.9” × 1.7”

Main crystal size: 1.5 × 1.4 cm = 0.6” × 0.6”

With handwritten note & record from the Folch Collection (duplicates)

Pyrrhotite with Dolomite.
Pyrrhotite with Dolomite.
Wulfenite with Dolomite
Wulfenite with Dolomite.
Wulfenite with Dolomite

RH6M3: Two huge size Wulfenite crystals with a toasted honey color on the edges and yellow pinacoidal faces. With a small matrix.
This sample was purchased from John S. Albanese, of New Jersey.The piece is accompanied by a handwritten label with the notes from Mr. Folch.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico

Specimen size: 3.3 × 3.1 × 2.4 cm = 1.3” × 1.2” × 0.9”

Main crystal size: 2.9 × 2.9 cm = 1.1” × 1.1”

With handwritten note from the Folch Collection (duplicates)

Wulfenite with Calcite

RJ46H8: The crystal is very thick, almost prismatic, and has very well-defined faces and edges. Its color is very good and the aerial position of the crystal on the matrix make the sample very esthetic.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico (1960)

Specimen size: 4.5 × 4.3 × 4 cm = 1.8” × 1.7” × 1.6”

Main crystal size: 1.1 × 0.8 cm = 0.4” × 0.3”

With handwritten note from the Folch Collection (duplicates)

Wulfenite with Calcite. Front
Front
Wulfenite with Calcite. Rear
Rear
Wulfenite with Calcite. Top
Top
Wulfenite
Wulfenite. Wulfenite.
Wulfenite

RX96F8: The crystals, with perfect color and brilliance, have a elongated form that is not common among examples from Los Lamentos.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico

Specimen size: 6.3 × 4.7 × 4 cm = 2.5” × 1.9” × 1.6”

Main crystal size: 0.6 × 0.3 cm = 0.2” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Wulfenite

RX37J1: Group of bipyramidal acute crystals, much of them doubly terminated, very well defined and with intense deep orange color. Although the locality on original the label is Tiger, we authenticated the specimen as coming from Los Lamentos, so we give this last locality as correct.
We will send the label of the sample, from the Ernest Windisch collection (World Wide Minerals), Philipsburg, Québec, to the buyer.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico

Specimen size: 7.3 × 4.4 × 3.5 cm = 2.9” × 1.7” × 1.4”

Main crystal size: 0.8 × 0.3 cm = 0.3” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Wulfenite. Wulfenite.
Wulfenite with Calcite
Wulfenite with Calcite. Wulfenite with Calcite.

RQ86S7: Prismatic crystals quite more elongated than usual on the samples from Los Lamentos, with neat pinacoidal terminations, very bright and an orange color with darker areas in the center of the prism. With Calcite and on matrix.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico (±1964)

Specimen size: 10.1 × 6.7 × 2 cm = 4.0” × 2.6” × 0.8”

Main crystal size: 1.1 × 0.5 cm = 0.4” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Calcite fluorescent long & short UV
Wulfenite with Calcite
Wulfenite with Calcite

RH94M9: Group of thick tabular crystals that have very well defined faces and edges, excellent luster and a very deep orange color. On Limonite matrix.
The specimen is accompanied by a Lidstrom’s label.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico (±1968)

Specimen size: 10.8 × 7.8 × 4.5 cm = 4.3” × 3.1” × 1.8”

Main crystal size: 0.9 × 0.8 cm = 0.4” × 0.3”

With handwritten note from the Folch Collection (duplicates)

Calcite fluorescent long & short UV
Wulfenite with Calcite.
Wulfenite with Calcite.
Wulfenite with Calcite
Wulfenite with Calcite. Wulfenite with Calcite.
Wulfenite with Calcite

RC52H3: Group of tabular crystals very sharp, with excellent color and luster and contrasting with a white matrix.
We offer a label of the first supplier, Barney Goff, from New Hope, with autographed notes of Sr. Folch.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico (±1973)

Specimen size: 11 × 7 × 4 cm = 4.3” × 2.8” × 1.6”

Main crystal size: 1.3 × 1.3 cm = 0.5” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Calcite fluorescent long & short UV
Vanadinite with Calcite
Vanadinite with Calcite

RJ14V5: Prismatic crystals with very well defined faces and edges, most of them doubly terminated, a clear cream color, on a druse of rhombohedral crystals of Calcite.
The sample is with a label and the collection card that we'll send to the buyer.
Mina San Carlos (Mina Apex), San Carlos, Manuel Benavides, Chihuahua  Mexico (±1955)

Specimen size: 7.8 × 6.7 × 3.3 cm = 3.1” × 2.6” × 1.3”

Main crystal size: 0.4 × 0.2 cm = 0.2” × 0.1”

With handwritten note & record from the Folch Collection (duplicates)

Vanadinite with Calcite. Vanadinite with Calcite.
Vanadinite with Calcite
Vanadinite with Calcite. Vanadinite with Calcite.
Vanadinite with Calcite

RR27S7: Spindled prismatic crystals of Vanadinite. They are very acute and most of them have hollowed growths, their color is reddish brown and they are with Calcite on matrix. It is an historical sample, that comes from the Elbert Barron collection, as is shown on the original label and collection card, and it was purchased by Folch at El Paso, in 1959.
Mina San Carlos (Mina Apex), San Carlos, Manuel Benavides, Chihuahua  Mexico (±1959)

Specimen size: 8.2 × 6.2 × 5.2 cm = 3.2” × 2.4” × 2.0”

Main crystal size: 0.4 × 0.2 cm = 0.2” × 0.1”

With handwritten note & record from the Folch Collection (duplicates)

Calcite minor fluorescence long & short UV
Silver with Calcite

RE27G0: An esthetic specimen, very aerial, in which are some crystals are elongated and some of them show the twin plane clearly, in a Calcite matrix.
Sr. Folch purchased the specimen in 1962, but, as documentation explains, it was probably mined around 1910.
Batopilas, Andrés del Río District, Municipio Batopilas, Chihuahua  Mexico (±1910)

Specimen size: 5.9 × 3.5 × 3.3 cm = 2.3” × 1.4” × 1.3”

Main crystal size: 1.7 × 0.2 cm = 0.7” × 0.1”

With handwritten note & record from the Folch Collection (duplicates)

Calcite fluorescent long & short UV
Silver with Calcite. Front
Front
Silver with Calcite. Rear
Rear
Silver with Calcite.
Adamite
Adamite.
Adamite

RB63P8: "Bow tie" growth of elongated crystals with clear color zoning, white at the center and a beautiful yellow elsewhere. The sample has an extraordinary fluorescence, very much stronger than usual.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 4.3 × 2.5 × 3.4 cm = 1.7” × 1.0” × 1.3”

With handwritten note from the Folch Collection (duplicates)

Extremely fluorescent long & short UV
Adamite

RD76H7: The color and the esthetics of the specimen are very good. Crystals, small and very bright, form spheroidal growths on a matrix of Limonite.
Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 4.7 × 4.2 × 3.2 cm = 1.9” × 1.7” × 1.3”

With record from the Folch Collection (duplicates)

Extremely fluorescent long & short UV
Adamite. Front
Front
Adamite. Side
Side
Adamite on Limonite
Adamite on Limonite. Adamite on Limonite.
Adamite on Limonite

RV13L9: Group of well defined and very bright Adamite crystals. A gentle yellow to greenish color, on a Limonite matrix.
The specimen is with a commercial label of John S. Albanese, from New Jersey. We will send the label to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 4.8 × 3.5 × 2.8 cm = 1.9” × 1.4” × 1.1”

Main crystal size: 0.6 × 0.5 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Very fluorescent long & short UV
Adamite

RT36H0: A pleasant group of crystals of excellent color and luster and completely undamaged, on the Limonite matrix typical of Mapimí specimens.
Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 5 × 3.5 × 3.7 cm = 2.0” × 1.4” × 1.5”

With handwritten note from the Folch Collection (duplicates)

Extremely fluorescent long & short UV
Adamite.
Manganoan Adamite
Manganoan Adamite. Manganoan Adamite.
Manganoan Adamite

RA14V1: The crystals are more isolated than usual for samples from Mapimí. They are on limonite matrix and have a very intense color and luster (but with a little bit less contrast than in the photo).
The sample is with a card from the Folch collection (number 13015) that we'll send to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (±1980)

Specimen size: 9.3 × 6.2 × 5.2 cm = 3.7” × 2.4” × 2.0”

Main crystal size: 0.4 × 0.3 cm = 0.2” × 0.1”

With handwritten note & record from the Folch Collection (duplicates)

Minor fluorescence long & short UV
Fluorapatite

RD56F8: A classic crystal with excellent color and transparency, and on matrix. Folch bought it in Cerro del Mercado, Durango, in September 1956.
Mina Cerro de Mercado, Cerro de los Remedios, Victoria de Durango, Municipio de Durango, Durango  Mexico (1956)

Specimen size: 4.7 × 3.6 × 3.2 cm = 1.9” × 1.4” × 1.3”

Main crystal size: 2.2 × 1.1 cm = 0.9” × 0.4”

With handwritten note & record from the Folch Collection (duplicates)

Fluorescent long & short UV
Fluorapatite.
Mimetite with Calcite
Mimetite with Calcite.

RK63J1: Prismatic crystals with very acute pyramidal terminations. Faces and edges are very well defined and the transparency, luster and color (deep yellow) are notable on a matrix of small crystals of pinkish Calcite.
Velardeña Distrito, Durango  Mexico

Specimen size: 4.3 × 3.6 × 1.7 cm = 1.7” × 1.4” × 0.7”

Main crystal size: 0.8 × 0.2 cm = 0.3” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Calcite minor fluorescence long & short UV
Quartz (variety amethyst)

FK46K0: Classic group of crystals from this locality, in this case very transparent and with an excellent color, on a small matrix. The sample is very esthetic.
Piedra Parada (Las Vigas), Municipio Tatatila, Veracruz (Veracruz de Ignacio de la Llave)  Mexico

Specimen size: 5.3 × 4.5 × 4.2 cm = 2.1” × 1.8” × 1.7”

Main crystal size: 3.6 × 1.2 cm = 1.4” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Quartz (variety amethyst).
Quartz (variety amethyst)
Quartz (variety amethyst). Quartz (variety amethyst).

RC99P8: Probably this is one of the first amethyst samples from Las Vigas because the original label indicates that it was acquired in Tucson in 1968 and (erroneously) 'Guerrero' as the locality. It is a very aerial group of crystals, some of them doubly terminated, with a very well marked color zoning. Luster and transparency are excellent.
Piedra Parada (Las Vigas), Municipio Tatatila, Veracruz (Veracruz de Ignacio de la Llave)  Mexico (±1968)

Specimen size: 9 × 5.7 × 2.9 cm = 3.5” × 2.2” × 1.1”

Main crystal size: 2.4 × 1.2 cm = 0.9” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Calcite on Quartz

RR46G0: Excellent representation of Calcite from Guanajuato. The specimen is especially esthetic due to the aerial position of flat rhombohedral crystals, with a lenticular habit, on a matrix of lightly violet Quartz.
Guanajuato, Guanajuato  Mexico (±1967)

Specimen size: 5.7 × 5.3 × 3.6 cm = 2.2” × 2.1” × 1.4”

Main crystal size: 3.3 × 3.1 cm = 1.3” × 1.2”

With handwritten note & record from the Folch Collection (duplicates)

Calcite very fluorescent long & short UV
Calcite on Quartz.
Clinozoisite with Quartz and Garnet
Clinozoisite with Quartz and Garnet. Clinozoisite with Quartz and Garnet.
Clinozoisite with Quartz and Garnet

RF6T5: Radial aggregates of acicular crystals with intense pink color, a shade that is well known but uncommon for the species. They are on a matrix with Quartz and garnet (probably Grossular).
The sample is with its Folch collection card and the Burminco (George Burnham) label that we'll send to the buyer.
Álamos, Municipio de Álamos, Sonora  Mexico

Specimen size: 7.4 × 5.5 × 4 cm = 2.9” × 2.2” × 1.6”

With handwritten note & record from the Folch Collection (duplicates)

Tellurite with Quartz
Tellurite with Quartz

TK26J1: Excellent miniature of this rare tellurium oxide. It is in groups of deep yellow acicular crystals in vugs on a Quartz matrix.
We will send the label of the sample, from Scott Williams Mineral Company, Scottsdale, Arizona, to the buyer.
Moctezuma Mine, Moctezuma, Sonora  Mexico

Specimen size: 2.9 × 3.1 × 2.4 cm = 1.1” × 1.2” × 0.9”

Main crystal size: 0.2 × 0.2 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Tellurite with Quartz.
Smithsonite
Smithsonite. Smithsonite.
Smithsonite

RD76V5: Botryoidal aggregate with intense and deep pink-mauve color and good luster. It is coating a rocky matrix.
The sample is with a label and the collection card that we'll send to the buyer.
Mina La Suerte, Choix, Sinaloa  Mexico (±1972)

Specimen size: 7.8 × 7.1 × 2.4 cm = 3.1” × 2.8” × 0.9”

With handwritten note & record from the Folch Collection (duplicates)

Roméite Group (stibiconite)

RE27S7: A Stibiconite pseudomorph after a Stibnite crystal, whose faces and edges are quite better defined than usual on the samples from Real de Catorce, and it has a more “fresh”, less rough, appearance than usual.
Real de Catorce, Catorce, San Luis Potosí  Mexico

Specimen size: 14.8 × 2.5 × 1.8 cm = 5.8” × 1.0” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence long & short UV
Roméite Group (stibiconite). Front
Front
Roméite Group (stibiconite). Rear
Rear
Roméite Group (stibiconite). Top
Top

NORTHERN SPAIN


Gahnite with Quartz
Gahnite with Quartz.
Gahnite with Quartz.
Gahnite with Quartz

RE6K9: Well defined blue-grayish octahedral crystals on a Quartz matrix.
Victoria Mine, Arrés, Comarca Val d'Arán, Lleida/Lérida, Catalonia  Spain

Specimen size: 5.0 × 4.0 × 3.4 cm = 2.0” × 1.6” × 1.3”

Main crystal size: 0.6 × 0.5 cm = 0.2” × 0.2”

With handwritten note & record from the Folch Collection (duplicates)

Cobaltoan Calcite

RJ47W6: Translucent polished section with banded growths and nucleus of very intense color. The sample has on some of its sides the original matrix that contrasts with the deep color of the Calcite.
Solita Mine, Peramea, Baix Pallars, Comarca Pallars Sobirà, Lleida/Lérida, Catalonia  Spain

Specimen size: 11.2 × 11 × 1.8 cm = 4.4” × 4.3” × 0.7”

Minor fluorescence long & short UV

With handwritten note from the Folch Collection
Cobaltoan Calcite. Front
Front
Cobaltoan Calcite. Rear
Rear
Cobaltoan Calcite
Cobaltoan Calcite. Front
Front
Cobaltoan Calcite. Rear
Rear
Cobaltoan Calcite

RR27V1: Banded growths of cobaltoan Calcite with a very intense color alternating with fine bands of white and yellowish Calcite. The sample, in spite its fine surface, hasn't been acid-etched, as its rough surfaces in most areas and the existence of easily altered carbonates proves.
The sample is with a card from the Folch collection (number 2052) that we'll send to the buyer.
Solita Mine, Peramea, Baix Pallars, Comarca Pallars Sobirà, Lleida/Lérida, Catalonia  Spain

Specimen size: 13.5 × 10 × 6.5 cm = 5.3” × 3.9” × 2.6”

With handwritten note & record from the Folch Collection (duplicates)

Minor fluorescence long & short UV
Cobaltoan Calcite

RC98Q5: Polished section with concretionary growths with excellent color, very deep. Though we don’t usually present polished samples, in this case we made an exception because of the unusual quality of the color of the Calcite and the collection of precedence, the mine (now totally abandoned and collapsed) was precisely exploited to obtain such pieces.
Solita Mine, Peramea, Baix Pallars, Comarca Pallars Sobirà, Lleida/Lérida, Catalonia  Spain (±1978)

Specimen size: 14.3 × 11.2 × 1.7 cm = 5.6” × 4.4” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Cobaltoan Calcite. Front
Front
Cobaltoan Calcite. Rear
Rear
Cobaltoan Calcite
Cobaltoan Calcite. Cobaltoan Calcite.
Cobaltoan Calcite.

RA86Y9: Fine banded growths that alternate bands of very intense and deep color contrasting with others that have a very pale color. As a rarity, we note the presence of a small geode with very acute cobaltoan Calcite crystals, very rare for the locality.
Solita Mine, Peramea, Baix Pallars, Comarca Pallars Sobirà, Lleida/Lérida, Catalonia  Spain

Specimen size: 14.5 × 8.6 × 4.8 cm = 5.7” × 3.4” × 1.9”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence long & short UV

Calcite with Aurichalcite inclusions (variety zeiringite)

RG12X8: Parallel banded growths of Calcite, very rich with oriented bluish-green Aurichalcite inclusions.
Solita Mine, Peramea, Baix Pallars, Comarca Pallars Sobirà, Lleida/Lérida, Catalonia  Spain

Specimen size: 9.2 × 5.8 × 5.3 cm = 3.6” × 2.3” × 2.1”

With handwritten note from the Folch Collection (duplicates)

Zoned fluorescence long & short UV
Calcite with Aurichalcite inclusions (variety zeiringite). Front
Front
Calcite with Aurichalcite inclusions (variety zeiringite). Rear
Rear
Aurichalcite on Calcite with Aurichalcite inclusions (variety zeiringite)
Aurichalcite on Calcite with Aurichalcite inclusions (variety zeiringite). Aurichalcite on Calcite with Aurichalcite inclusions (variety zeiringite).

RE26Y9: Green microcrystalline Aurichalcite films on banded Calcite with a very slightly green color due to the presence of inclusions of the same Aurichalcite. A very uncommon sample, because well differentiated exposed Aurichalcite is very scarce for the locality.
Solita Mine, Peramea, Baix Pallars, Comarca Pallars Sobirà, Lleida/Lérida, Catalonia  Spain

Specimen size: 12 × 9.4 × 3.3 cm = 4.7” × 3.7” × 1.3”

With handwritten note from the Folch Collection (duplicates)

Calcite fluorescent long & short UV

Quartz with Pyrophyllite

RC10T8: Crystals of quartz with parallel growths on their terminal areas, very bright and partially coated by small crystals of Pyrophyllite.
Prat d'en Mallol, Llavorsí, Comarca Pallars Sobirà, Lleida/Lérida, Catalonia  Spain (1963)

Specimen size: 9.4 × 6.9 × 6.4 cm = 3.7” × 2.7” × 2.5”

Main crystal size: 9.4 × 4.4 cm = 3.7” × 1.7”

With handwritten note from the Folch Collection (duplicates)

Pyrophyllite minor fluorescence long & short UV
Quartz with Pyrophyllite. Quartz with Pyrophyllite.
Fluorite
Fluorite. Fluorite.

RM14P1: Group of cubical crystals of sharp, very well defined, faces and edges of slightly greenish yellow color. The sample, with the edges areas more transparent than the central areas of the faces, is absolutely representative of this Catalan locality.
Matagalls Mine (Sant Marçal Mines), Sant Marçal, Viladrau, Comarca Osona, Girona/Gerona, Catalonia  Spain

Specimen size: 11.2 × 11 × 3.2 cm = 4.4” × 4.3” × 1.3”

Main crystal size: 2.7 × 1.7 cm = 1.1” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence long & short UV
Fluorite with Baryte and Quartz

RF46X8: Aggregate of cubic Fluorite crystals that are bright, between transparent and translucent and have a clear green color and selective Quartz coatings on some of their faces. There also are some pink Baryte crystals on them. A classic of Spanish mineralogy.
Matagalls Mine (Sant Marçal Mines), Sant Marçal, Viladrau, Comarca Osona, Girona/Gerona, Catalonia  Spain (±1960)

Specimen size: 16.3 × 15.5 × 3.8 cm = 6.4” × 6.1” × 1.5”

Main crystal size: 3 × 3 cm = 1.2” × 1.2”

With handwritten note from the Folch Collection (duplicates)

Fluorescent long & short UV
Fluorite with Baryte and Quartz. Fluorite with Baryte and Quartz.
Wulfenite (variety chillagite)
Wulfenite (variety chillagite).

RD10K9: Excellent miniature, very representative of this rare variety that is an intermediate member of the Wulfenite-Stolzite series. From a Catalan classic locality close to Barcelona. Crystals show a lenticular appereance.
Teresita Mine, Can Donadeu, Sant Fost de Campsentelles, Comarca Vallès Oriental, Barcelona, Catalonia  Spain

Specimen size: 2.3 × 2.1 × 0.8 cm = 0.9” × 0.8” × 0.3”

With handwritten note from the Folch Collection (duplicates)

Wulfenite (variety chillagite)

RC59K9: Excellent miniature, very representative of this rare variety that is an intermediate member of the Wulfenite-Stolzite series. From a Catalan classic locality close to Barcelona. Crystals show a lenticular appearance.
Teresita Mine, Can Donadeu, Sant Fost de Campsentelles, Comarca Vallès Oriental, Barcelona, Catalonia  Spain

Specimen size: 2.4 × 2.0 × 1.4 cm = 0.9” × 0.8” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Wulfenite (variety chillagite).
Wulfenite (variety chillagite) with Baryte
Wulfenite (variety chillagite) with Baryte.

RB12M9: Thin laminar crystals of this rare variety of Wulfenite, rich in tungsten, that contrast with the white matrix of Baryte. The locality is a classic of Spanish mineralogy and the samples are very scarce.
Sant Fost de Campsentelles, Comarca Vallès Oriental, Barcelona, Catalonia  Spain

Specimen size: 2.7 × 2.1 × 1.7 cm = 1.1” × 0.8” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Wulfenite (variety chillagite)

RA60K9: Excellent miniature, very representative of this rare variety that is an intermediate member of the Wulfenite-Stolzite series. From a Catalan classic locality close to Barcelona. Crystals show a lenticular appereance.
Teresita Mine, Can Donadeu, Sant Fost de Campsentelles, Comarca Vallès Oriental, Barcelona, Catalonia  Spain

Specimen size: 3.4 × 2.3 × 1.2 cm = 1.3” × 0.9” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Wulfenite (variety chillagite).
Wulfenite (variety chillagite) on Baryte
Wulfenite (variety chillagite) on Baryte.

RP16M0: Laminar, very thin, crystals of this rare variety of Wulfenite (Chillagite is tungstenian wulfenite),enhanced by a white matrix. The locality is a classic of Spanish mineralogy.
Teresita Mine, Can Donadeu, Sant Fost de Campsentelles, Comarca Vallès Oriental, Barcelona, Catalonia  Spain (±1950)

Specimen size: 4.2 × 3.4 × 1.7 cm = 1.7” × 1.3” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence long & short UV
Wulfenite (variety chillagite) with Fluorite and Galena

RZ9P1: Creamy beveled laminar crystals, some of them very well defined, of this very rare Wulfenite variety, rich in tungsten. The crystals contrast with a matrix of clear greenish Fluorite with nucleus of Galena.
Sant Fost de Campsentelles, Comarca Vallès Oriental, Barcelona, Catalonia  Spain (01/1955)

Specimen size: 7.8 × 5.9 × 4.3 cm = 3.1” × 2.3” × 1.7”

Main crystal size: 1.1 × 0.7 cm = 0.4” × 0.3”

With handwritten note from the Folch Collection (duplicates)

Wulfenite (variety chillagite) with Fluorite and Galena. Wulfenite (variety chillagite) with Fluorite and Galena.
Octahedral Fluorite
Octahedral Fluorite. Octahedral Fluorite.
Octahedral Fluorite

RD9AA2: Druse of very sharp octahedral crystals, translucent, with an intense green color and coating a granite matrix. A Spanish classic from a currently closed locality that only sporadically produces samples of this quality. Given to Sr. Folch by Ramón Brumós Albero, a well-known amateur mineralogist of the last century.
Berta Quarry, Can Domènech Hill, Roques Blanques Mountains, Sant Cugat del Vallès-El Papiol, Comarca Vallès Occidental / Baix Llobregat, Barcelona, Catalonia  Spain

Specimen size: 10.8 × 7.7 × 4.3 cm = 4.3” × 3.0” × 1.7”

Main crystal size: 0.6 × 0.5 cm = 0.2” × 0.2”

Fluorescent long & short UV

Cerussite with Galena

RC62P1: Very well defined twins of flat prismatic crystals whose color is between white and clear brown, and they are on a massive Galena matrix. We especially note that the mine is well documented on the label, which is unusual on most of the samples of the epoch.
Raimunda Mine, El Molar, Comarca Priorat, Tarragona, Catalonia  Spain (±1923)

Specimen size: 6.3 × 5.3 × 3.8 cm = 2.5” × 2.1” × 1.5”

Main crystal size: 0.6 × 0.3 cm = 0.2” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence long & short UV
Cerussite with Galena. Cerussite with Galena.
Cerussite with Galena
Cerussite with Galena. Cerussite with Galena.

RB63P1: Very well defined twins of flat prismatic crystals whose color is between white and clear brown, and they are on a massive Galena matrix. We especially note that the mine is well documented on the label, which is unusual on most of the samples of the epoch.
Raimunda Mine, El Molar, Comarca Priorat, Tarragona, Catalonia  Spain (±1923)

Specimen size: 7 × 3.6 × 5.1 cm = 2.8” × 1.4” × 2.0”

Main crystal size: 0.7 × 0.2 cm = 0.3” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence long & short UV
Cerussite with Galena

FQ11K0: The sample, mined in 1959, forms groups of twinned crystals from the old oxidation zone of this historic and classic Spanish locality. The matrix is basically of massive Galena and Cerussite with Limonite.
Raimunda Mine, El Molar, Comarca Priorat, Tarragona, Catalonia  Spain (1959)

Specimen size: 7.5 × 4.5 × 4.4 cm = 3.0” × 1.8” × 1.7”

Main crystal size: 0.5 × 0.3 cm = 0.2” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Fluorescent long UV & minor fluorescence short UV
Cerussite with Galena. Front
Front
Cerussite with Galena. Top
Top
Cerussite with Galena.
Cerussite with Galena
Cerussite with Galena. Cerussite with Galena.

RK64P1: Butterfly and cyclic twins of well defined crystals on a massive Galena matrix. We especially note that the mine is well documented on the label, which is unusual on most of the samples of the epoch. The label notes the year of the find of the specimen - 1923.
Raimunda Mine, El Molar, Comarca Priorat, Tarragona, Catalonia  Spain (±1923)

Specimen size: 7.9 × 7.5 × 5.2 cm = 3.1” × 3.0” × 2.0”

Main crystal size: 0.7 × 0.5 cm = 0.3” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence long & short UV
Dolomite
Dolomite

RZ46R6: Aerial group of translucent and bright rhombohedral crystals. The Folch collection records note that is was collected by F. Coma October 1959.
Asturreta Quarry, Eugui, Esteríbar, Comarca Auñamendi, Navarre  Spain

Specimen size: 5.8 × 3.8 × 3.9 cm = 2.3” × 1.5” × 1.5”

Main crystal size: 3.1 × 2.3 cm = 1.2” × 0.9”

With handwritten note & record from the Folch Collection (duplicates)

Dolomite.
Dolomite
Dolomite.

RQ10X8: Aggregate of Sharp, white rhombohedral Dolomite crystals. They are translucent and have very well marked phantom growths.
Asturreta Quarry, Eugui, Esteríbar, Comarca Auñamendi, Navarre  Spain

Specimen size: 6.2 × 5.8 × 4.5 cm = 2.4” × 2.3” × 1.8”

Main crystal size: 4 × 3 cm = 1.6” × 1.2”

With handwritten note from the Folch Collection (duplicates)

Dolomite

RQ46Q5: Twinned rhombohedral crystals with the usual quality for Eugui, with very well defined faces and edges, from transparent to translucent and very bright. A Spanish classic.
Asturreta Quarry, Eugui, Esteríbar, Comarca Auñamendi, Navarre  Spain (1959)

Specimen size: 6.9 × 4.4 × 2.7 cm = 2.7” × 1.7” × 1.1”

Main crystal size: 3.4 × 3.3 cm = 1.3” × 1.3”

With handwritten note from the Folch Collection (duplicates)

Dolomite. Front
Front
Dolomite. Top
Top
Dolomite
Dolomite.

RP17F9: The crystals of this aggregate have great clarity and brightness, with inner iridescent inclusions. The interpenetration twin is apparent in different zones on the specimen.
Asturreta Quarry, Eugui, Esteríbar, Comarca Auñamendi, Navarre  Spain (1968)

Specimen size: 7 × 5 × 3.7 cm = 2.8” × 2.0” × 1.5”

With handwritten note from the Folch Collection (duplicates)

Twinned Dolomite
Twinned Dolomite

FY47K0: Twin of two rhombohedral crystals of very well defined faces and edges, bright and translucent. The original label indicates that it was a gift from Carlos Díaz de Mauriño, from Pamplona, in 1967, to Sr. Folch.
Asturreta Quarry, Eugui, Esteríbar, Comarca Auñamendi, Navarre  Spain (±1967)

Specimen size: 7.7 × 6.1 × 6 cm = 3.0” × 2.4” × 2.4”

Main crystal size: 3.8 × 3.7 cm = 1.5” × 1.5”

With handwritten note & record from the Folch Collection (duplicates)

Twinned Dolomite. Front
Front
Twinned Dolomite. Top
Top
Doubly terminated Calcite
Doubly terminated Calcite. Front
Front
Doubly terminated Calcite. Side
Side

RZ11H9: The sample mined the August 1960, must be one of the first known from the locality. Doubly terminated, a twin of two trapezohedrons with rhombohedrons forming the terminations.
La Florida mining area, Herrería-Valdáliga-Rionansa, Cantabria  Spain (06/1960)

Specimen size: 5 × 3.7 × 2.8 cm = 2.0” × 1.5” × 1.1”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence short UV
Calcite with Dolomite

RA10X8: An interesting and fine precursor of the samples from La Florida, with yellow and transparent scalenohedral crystals. On matrix, with slightly pink Dolomite crystals.
La Florida mining area, Herrería-Valdáliga-Rionansa, Cantabria  Spain (±1980)

Specimen size: 7.2 × 4.9 × 3.1 cm = 2.8” × 1.9” × 1.2”

Main crystal size: 2.7 × 1.4 cm = 1.1” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Dolomite minor fluorescence long & short UV
Calcite with Dolomite.
Calcite with Dolomite. Calcite with Dolomite.
Calcite with Dolomite
Calcite with Dolomite.

RB11X8: Very aerial group of whitish scalenohedral Calcite crystals on a matrix of pink Dolomite crystals. It is a precursor of the Calcite from La Florida, but it has some significant differences, as with the color and the crystal morphology.
La Florida mining area, Herrería-Valdáliga-Rionansa, Cantabria  Spain (±1980)

Specimen size: 7.5 × 6.2 × 3.8 cm = 3.0” × 2.4” × 1.5”

Main crystal size: 1.6 × 0.9 cm = 0.6” × 0.4”

With handwritten note from the Folch Collection (duplicates)

Dolomite fluorescent long & short UV
Sphalerite with Dolomite

RX14P1: Well defined crystals, bright and of good color and transparency, with small coatings of white Dolomite, on matrix.
Las Mánforas Mine, Áliva mining area, Camaleño, Comarca Liébana, Cantabria  Spain

Specimen size: 4.2 × 3.6 × 2.8 cm = 1.7” × 1.4” × 1.1”

Main crystal size: 1 × 0.8 cm = 0.4” × 0.3”

Sphalerite with Dolomite. Sphalerite with Dolomite.
Sphalerite with Calcite and Dolomite
Sphalerite with Calcite and Dolomite. Front
Front
Sphalerite with Calcite and Dolomite. Side
Side

RM66P8: Complex crystals of Sphalerite of dark honey color and good transparency, partially coated by small crystals of Dolomite and with doubly terminated crystals of Calcite (a species uncommon at this locality in well-formed crytals), with the shape of a scalenohedron but composed of polycrystalline growths of the prism and a terminal rhombohedron.
Las Mánforas Mine, Áliva mining area, Camaleño, Comarca Liébana, Cantabria  Spain

Specimen size: 6.7 × 5.7 × 4.7 cm = 2.6” × 2.2” × 1.9”

With handwritten note from the Folch Collection (duplicates)

Sphalerite

RF86L9: Very sharp Sphalerite crystal with some curved edges. A translucent sample with a good honey to red intense color.
The piece is accompanied by a handwritten label from the Folch collection.
Las Mánforas Mine, Áliva mining area, Camaleño, Comarca Liébana, Cantabria  Spain

Specimen size: 7.3 × 6 × 3 cm = 2.9” × 2.4” × 1.2”

With handwritten note from the Folch Collection (duplicates)

Sphalerite.
Sphalerite with Dolomite
Sphalerite with Dolomite.

RG14V1: Parallel growths of complex crystals of Sphalerite with a deep honey orange color and on a matrix of Dolomite with Calcite.
Las Mánforas Mine, Áliva mining area, Camaleño, Comarca Liébana, Cantabria  Spain

Specimen size: 8.8 × 6.1 × 5.6 cm = 3.5” × 2.4” × 2.2”

With handwritten note from the Folch Collection (duplicates)

Sphalerite with Dolomite
Sphalerite with Dolomite

RH89K9: Complex Sphalerite crystal group, with multiple faces and curved edges. The color is excellent and contrasts with the snowy white Dolomite matrix.
Las Mánforas Mine, Áliva mining area, Camaleño, Comarca Liébana, Cantabria  Spain (±1968)

Specimen size: 10.1 × 7.5 × 6.5 cm = 4.0” × 3.0” × 2.6”

Main crystal size: 5.7 × 5.3 cm = 2.2” × 2.1”

With handwritten note from the Folch Collection (duplicates)

Sphalerite with Dolomite.
Sphalerite with Dolomite. Sphalerite with Dolomite.
Doubly terminated Calcite with Sphalerite
Doubly terminated Calcite with Sphalerite.
Doubly terminated Calcite with Sphalerite.

RF64L3: Calcite crystal, with a small but aerial Sphalerite crystal, not well defined but complete. Calcite from this mine is not common in this well defined shape.
Las Mánforas Mine, Áliva mining area, Camaleño, Comarca Liébana, Cantabria  Spain (±1975)

Specimen size: 5.7 × 4.1 × 3 cm = 2.2” × 1.6” × 1.2”

Main crystal size: 1 × 0.7 cm = 0.4” × 0.3”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence long & short UV
Fluorite

RE36V5: Transparent cubic crystal with clear sky blue color, echeloned growths on the edges and recrystallized on the back side. The sample resembles, due to its aspect, some of the recent pieces from La Viesca, but it is earlier than the works at this place and it is from La Collada.
The sample is with a label that we'll send to the buyer.
Josefa-Veneros vein, Coroña de Arriba-La Collada, La Collada mining area, Siero, Comarca Oviedo, Asturias  Spain (±1973)

Specimen size: 10.5 × 8.6 × 5.4 cm = 4.1” × 3.4” × 2.1”

With handwritten note from the Folch Collection (duplicates)

Fluorite. Front
Front
Fluorite. Side
Side
Azurite with Conichalcite and Tyrolite
Azurite with Conichalcite and Tyrolite.

RQ59Y9: Nuclei of small Azurite crystals, on matrix, that have a very intense color and luster and are with botryoidal Conichalcite aggregates with a very deep green color and with leafy Tyrolite aggregates in clear bluish-green tones.
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain (1960)

Specimen size: 3.5 × 2.8 × 4 cm = 1.4” × 1.1” × 1.6”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”

With handwritten note from the Folch Collection (duplicates)

Azurite with Conichalcite and Tyrolite

RH13Y9: Surfaces of small Azurite crystals, on matrix, that have a very intense color and luster and are with very well defined botryoidal Conichalcite aggregates and with leafy Tyrolite aggregates in clear bluish-green tones.
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain (1960)

Specimen size: 10.3 × 8.3 × 5.8 cm = 4.1” × 3.3” × 2.3”

With handwritten note from the Folch Collection (duplicates)

Azurite with Conichalcite and Tyrolite. Azurite with Conichalcite and Tyrolite.
Tyrolite with Chrysocolla
Tyrolite with Chrysocolla. Tyrolite with Chrysocolla.

RG46Y9: Very well defined radial Tyrolite aggregates of leafy crystals. The have an excellent silky luster and a pale bluish-green color. They are on matrix, with Chrysocolla.
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain (1960)

Specimen size: 3.5 × 3.4 × 2.8 cm = 1.4” × 1.3” × 1.1”

With handwritten note from the Folch Collection (duplicates)

Tyrolite with Conichalcite and Azurite
Tyrolite with Conichalcite and Azurite

RA6W6: Fanlike growths of laminar crystals of Tyrolite with a green, slightly blue, color and rough growths of the same mineral, with Azurite and globular growths of Conichalcite on a limonite matrix. The Chrysocolla cited on the original label from Folch surely refers to the rough Tyrolite.
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain

Specimen size: 4.3 × 3.8 × 2.5 cm = 1.7” × 1.5” × 1.0”

With handwritten note from the Folch Collection (duplicates)

Tyrolite with Conichalcite and Azurite.
Tyrolite with Conichalcite and Azurite. Tyrolite with Conichalcite and Azurite.
Tyrolite
Tyrolite. Tyrolite.
Tyrolite

RT9P1: Aggregates of thin laminar crystals of Tyrolite. They are bright and the color is very deep. On matrix with Chrysocolla and Tetrahedrite-Tennantite.
On the back of the label it is cited that it was collected by D. Joaquín Folch on the dumps of the mine in 1960.
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain (04/1960)

Specimen size: 5 × 4.7 × 3.2 cm = 2.0” × 1.9” × 1.3”

With handwritten note & record from the Folch Collection (duplicates)

Tyrolite with Azurite and Chrysocolla

RF47Z8: Aggregates of laminar Tyrolite crystals with excellent silky luster and pale green color. They are on matrix, with Azurite.
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain (1960)

Specimen size: 5.1 × 4.1 × 1.8 cm = 2.0” × 1.6” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Tyrolite with Azurite and Chrysocolla. Tyrolite with Azurite and Chrysocolla.
Tyrolite
Tyrolite. Tyrolite.

RV8P1: Deep green aggregates of thin laminar crystals on dark brown matrix.
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain (04/1960)

Specimen size: 5.4 × 4.3 × 2.9 cm = 2.1” × 1.7” × 1.1”

With handwritten note from the Folch Collection (duplicates)

Tyrolite with Azurite

RC14Y9: Very well defined radial Tyrolite aggregates of leafy crystals. The have an excellent silky luster and a pale bluish-green color. They are on matrix, with Azurite.
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain (1960)

Specimen size: 6 × 4.6 × 3 cm = 2.4” × 1.8” × 1.2”

With handwritten note from the Folch Collection (duplicates)

Tyrolite with Azurite. Tyrolite with Azurite.
Tyrolite with Conichalcite and Azurite
Tyrolite with Conichalcite and Azurite. Tyrolite with Conichalcite and Azurite.

RV12Y9: Very well defined radial Tyrolite aggregates of leafy crystals. The have an excellent silky luster and a pale bluish-green color. They are on matrix, with Azurite and Conichalcite.
The specimen's photo has been reviewed and published in the magazine ‘Rocks & Minerals’ on page 554 in the volume 90, number 6, Nov/Dec 2015
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain (1960)

Specimen size: 6.4 × 5 × 3.6 cm = 2.5” × 2.0” × 1.4”

With handwritten note from the Folch Collection (duplicates)

Tyrolite
Tyrolite

RP96R0: Radial leafy growths of bright green laminar crystals of Tyrolite that contrast with the darker rocky matrix.
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain (1959)

Specimen size: 7.2 × 4.2 × 4.7 cm = 2.8” × 1.7” × 1.9”

With handwritten note & record from the Folch Collection (duplicates)

Tyrolite. Tyrolite.
Tyrolite with Azurite
Tyrolite with Azurite. Tyrolite with Azurite.

RD86Y9: Very well defined radial Tyrolite aggregates of leafy crystals. The have an excellent silky luster and a pale bluish-green color.
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain (1960)

Specimen size: 7.9 × 4.9 × 3.9 cm = 3.1” × 1.9” × 1.5”

With handwritten note from the Folch Collection (duplicates)

Tyrolite with Chrysocolla and Azurite

FT6K0: Leafy groups of laminar crystals on matrix, with Chrysocolla and vugs of small crystals of Azurite.
Mina Delfina, Hoyos de Alda, Ortiguero, Prado, Cabrales, Asturias  Spain (1981)

Specimen size: 7.9 × 6.2 × 5 cm = 3.1” × 2.4” × 2.0”

Main crystal size: 0.8 × 0.4 cm = 0.3” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Tyrolite with Chrysocolla and Azurite. Tyrolite with Chrysocolla and Azurite.
Cinnabar with Calcite
Cinnabar with Calcite. Cinnabar with Calcite.

RP66X8: Crystalline growth, on a rock matrix with exfoliated Calcite, a very typical aspect of the old Cinnabar samples found at the place erroneously called “puerto de Tarna,” which really corresponds to the Las Señales mines, also in León province. We note that this Cinnabar has not been acid-treated and that, in spite of the long time passed, maintains its intense luster and vivid red color. A classic, classic, from Spain.
Escarlati Mine, Puerto de las Señales, Maraña, Comarca Montaña Oriental, León, Castile and León  Spain

Specimen size: 6.2 × 4.6 × 5.6 cm = 2.4” × 1.8” × 2.2”

With handwritten note from the Folch Collection (duplicates)

Calcite fluorescent long & short UV

CENTRAL SPAIN


Cinnabar

RR16I7: Parallel growth of rhombohedral crystals. They have a considerable size for the locality and present good color and luster, even considering the long time passed since the specimen was mined.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain (±1979)

Specimen size: 2 × 1.4 × 1.1 cm = 0.8” × 0.6” × 0.4”

With handwritten note from the Folch Collection (duplicates)

Cinnabar. Front
Front
Cinnabar. Top
Top
Cinnabar with Dolomite
Cinnabar with Dolomite. Front
Front
Cinnabar with Dolomite. Top
Top

RQ17K9: Excellent miniature, very representative of the Almadén specimens. Showing well defined rhombohedron crystals, some of them with parallel growth. On matrix.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain (±1978)

Specimen size: 3.0 × 1.8 × 1.4 cm = 1.2” × 0.7” × 0.6”

Main crystal size: 1.0 × 0.8 cm = 0.4” × 0.3”

With handwritten note from the Folch Collection (duplicates)

Cinnabar

RF47F8: A splendid miniature with perfect growth of the crystals, in which the faces of the rhombohedron dominate. The color and brilliance are excellent. Folch found it at the Almadén Mine in 1923.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain (1923)

Specimen size: 3.1 × 2 × 1.5 cm = 1.2” × 0.8” × 0.6”

Main crystal size: 0.4 × 0.4 cm = 0.2” × 0.2”

With handwritten note & record from the Folch Collection (duplicates)

Cinnabar.
Cinnabar
Cinnabar.

RK64L3: Well defined and bright Cinnabar crystals, some of them very aerial, with prominent rhombohedral faces with curvatures and fine striations. We can see small drops of liquid mercury on the matrix.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain (±1964)

Specimen size: 3.4 × 3.1 × 2.2 cm = 1.3” × 1.2” × 0.9”

Main crystal size: 0.4 × 0.3 cm = 0.2” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Cinnabar with Dolomite

RQ14H8: Crystals, being small, have good color, luster and transparency and they strongly contrast with the white Dolomite where they are placed.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain

Specimen size: 4 × 3.4 × 2.9 cm = 1.6” × 1.3” × 1.1”

Main crystal size: 0.4 × 0.3 cm = 0.2” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Cinnabar with Dolomite. Front
Front
Cinnabar with Dolomite. Top
Top
Cinnabar with Dolomite
Cinnabar with Dolomite. Cinnabar with Dolomite.

RM14L3: Well formed Cinnabar crystals in a vug, with Quartz and Dolomite. The Folch label advises about the presence of Calomel (Calomelanos) as “small crystals inside the geode” with brown yellowish tones, but after analyses it has been demonstrated that it is Dolomite.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain (±1979)

Specimen size: 4 × 3.8 × 2.5 cm = 1.6” × 1.5” × 1.0”

Main crystal size: 0.3 × 0.2 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Cinnabar with Baryte

RV6L9: Group of Cinnabar crystals with well defined faces and edges, with a honey-colored Baryte crystal (that we have analyzed) on a black quartzite matrix and grey Quartz.
The piece is accompanied by a handwritten label from the Folch collection.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain (±1973)

Specimen size: 5 × 3.8 × 3.3 cm = 2.0” × 1.5” × 1.3”

Main crystal size: 0.6 × 0.3 cm = 0.2” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Cinnabar with Baryte.
Cinnabar with Baryte.
Cinnabar with Calcite
Cinnabar with Calcite.
Cinnabar with Calcite.

RM36I7: Groups of small crystals of excellent color and luster that contrast with a matrix rich in Quartz.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain

Specimen size: 5.8 × 4 × 3.3 cm = 2.3” × 1.6” × 1.3”

With handwritten note from the Folch Collection (duplicates)

Cinnabar with Quartz

RV7I2: The crystal has a considerable size for the locality and it has very well defined faces and edges, on matrix and with small Quartz crystals. A classic.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain (±1980)

Specimen size: 5.8 × 5 × 3.3 cm = 2.3” × 2.0” × 1.3”

Main crystal size: 0.6 × 0.6 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Cinnabar with Quartz. Cinnabar with Quartz.
Cinnabar
Cinnabar.
Cinnabar.

RE76F8: The crystals are small but the color and brilliance are exceptional. Folch found it at the Almadén Mine in 1923.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain (1923)

Specimen size: 6.2 × 4.2 × 3 cm = 2.4” × 1.7” × 1.2”

Main crystal size: 0.4 × 0.3 cm = 0.2” × 0.1”

With handwritten note & record from the Folch Collection (duplicates)

Cinnabar with Quartz

RQ7K9: Lively red crystals, good brilliance, that contrast on a snowy Quartz matrix.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain

Specimen size: 7.2 × 4.5 × 1.4 cm = 2.8” × 1.8” × 0.6”

Main crystal size: 0.5 × 0.4 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Cinnabar with Quartz.
Cinnabar with Quartz.
Cinnabar with Quartz
Cinnabar with Quartz. Cinnabar with Quartz.

RT96R6: Small crystals of Cinnabar with very well defined faces and edges, bright and of very intense red color, on white Quartz and on matrix. On the label there is noted the catalog number 35, one of the oldest in the Folch collection.
San Teodoro Shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain

Specimen size: 7.4 × 5.4 × 2.8 cm = 2.9” × 2.1” × 1.1”

Main crystal size: 0.3 × 0.2 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection (duplicates)

Pyromorphite

RG48F9: An aerial and esthetical group with dramatic color zoning near the top. The crystals are large and have a few common characteristics of the Horcajo specimens. The tips, even considering a beginning of cone growth, are perfectly flat. Another historical sample, with a lot of years on its back, when Sr. Folch purchased it in 1923 from a miner at the locality.
El Horcajo Mines, El Horcajo, Almodóvar del Campo, Comarca Campo de Calatrava, Ciudad Real, Castilla-La Mancha  Spain (1923)

Specimen size: 3 × 2.3 × 1.7 cm = 1.2” × 0.9” × 0.7”

With handwritten note & record from the Folch Collection (duplicates)

Fluorescent long & short UV
Pyromorphite.
Pyromorphite
Pyromorphite. Front
Front
Pyromorphite. Rear
Rear
Pyromorphite

RA88G0: A typical specimen from El Horcajo. Floating, with groups of parallel prismatic crystals forming walls. Crystals are grass green colored, with typical zones and changes of color near the tips.
El Horcajo Mines, El Horcajo, Almodóvar del Campo, Comarca Campo de Calatrava, Ciudad Real, Castilla-La Mancha  Spain

Specimen size: 5.7 × 2.8 × 2.3 cm = 2.2” × 1.1” × 0.9”

With handwritten note from the Folch Collection (duplicates)

Pyromorphite
Pyromorphite

RK88G2: Groups of prismatic crystals with the edges lightly curved. Some crystals are partially covered with and have inclusions of a mineral described as Litharge on the label, but we can't confirm that because we have not analyzed the mineral to certify it.
El Horcajo Mines, El Horcajo, Almodóvar del Campo, Comarca Campo de Calatrava, Ciudad Real, Castilla-La Mancha  Spain

Specimen size: 5.9 × 4.6 × 3.3 cm = 2.3” × 1.8” × 1.3”

Main crystal size: 1 × 0.3 cm = 0.4” × 0.1”

With handwritten note & record from the Folch Collection (duplicates)

Fluorescent long & short UV
Pyromorphite.
Pyromorphite.
Freibergite with Siderite and Quartz
Freibergite with Siderite and Quartz. Freibergite with Siderite and Quartz.

RQ14R0: Small but sharp crystals of Freibergite with excellent luster, implanted in small vugs coated by small crystals of Quartz and Chalcopyrite on a matrix very rich with Siderite. The species has been analyzed and we'll send a
copy of the analysis to the buyer.
Hiendelaencina, Comarca Serranía de Guadalajara, Guadalajara, Castilla-La Mancha  Spain (05/1950)

Specimen size: 3.1 × 3.1 × 1.6 cm = 1.2” × 1.2” × 0.6”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”

With handwritten note from the Folch Collection (duplicates)

Freibergite with Siderite and Quartz

RY14R0: Small but sharp and extraordinarily bright crystals of Freibergite implanted in small vugs coated by small crystals of Quartz and on a matrix very rich with Siderite. The species has been analyzed and we'll send a copy of the analysis to the buyer.
Hiendelaencina, Comarca Serranía de Guadalajara, Guadalajara, Castilla-La Mancha  Spain (05/1950)

Specimen size: 4.2 × 2.4 × 2.9 cm = 1.7” × 0.9” × 1.1”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”

With handwritten note from the Folch Collection (duplicates)

Freibergite with Siderite and Quartz. Freibergite with Siderite and Quartz.
Pyrargyrite
Pyrargyrite. Front
Front
Pyrargyrite. Top
Top
Pyrargyrite

RD89F9: The crystals have a good size and are better defined than usual in the famous and very desired specimens from the Hiendelaencina mines. The top faces clearly show trigonal geometry. The group is a floater.
Hiendelaencina, Comarca Serranía de Guadalajara, Guadalajara, Castilla-La Mancha  Spain

Specimen size: 2.3 × 1.5 × 1.5 cm = 0.9” × 0.6” × 0.6”

Main crystal size: 1.3 × 1.2 cm = 0.5” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Pyrargyrite with Siderite and Quartz

RB86K0: Small crystals of faces better defined than usual, on a matrix of Siderite and Quartz. This classic, classic, specimen has been chemically analyzed and we’ll send a copy of the analysis to the buyer of the specimen.
Hiendelaencina, Comarca Serranía de Guadalajara, Guadalajara, Castilla-La Mancha  Spain

Specimen size: 7.3 × 3.8 × 5.5 cm = 2.9” × 1.5” × 2.2”

Main crystal size: 0.2 × 0.1 cm = 0.1” × 0.0”

With handwritten note from the Folch Collection (duplicates)

Pyrargyrite with Siderite and Quartz. Pyrargyrite with Siderite and Quartz.
Stephanite with Miargyrite
Stephanite with Miargyrite.
Stephanite with Miargyrite.

RH37F8: From the Spanish locality that is a classic for its excellent silver sulfosalts. A small, long crystal with perfect definition of the faces and accompanied by Miargyrite, both on the matrix typical for the locality. Folch found this at the Teresa Mine in 1950.
Hiendelaencina, Comarca Serranía de Guadalajara, Guadalajara, Castilla-La Mancha  Spain (05/1950)

Specimen size: 2.9 × 1.4 × 1.3 cm = 1.1” × 0.6” × 0.5”

Main crystal size: 0.2 × 0.1 cm = 0.1” × 0.0”

With handwritten note & record from the Folch Collection (duplicates)

Smoky Quartz with Microcline

RA11V0: Translucent crystals of Quartz showing inclusions and phantom growths. They are on a matrix of Microcline crystals, one of them clearly dominant and with a neat Baveno twin.
Bustarviejo, Comarca Sierra Norte, Madrid, Community of Madrid  Spain

Specimen size: 7.1 × 7 × 5.2 cm = 2.8” × 2.8” × 2.0”

Main crystal size: 6.1 × 2.3 cm = 2.4” × 0.9”

With handwritten note from the Folch Collection (duplicates)

Smoky Quartz with Microcline. Front
Front
Smoky Quartz with Microcline. Rear
Rear
Smoky Quartz with inclusions, Microcline and Albite (pericline)
Smoky Quartz with inclusions, Microcline and Albite (pericline).

RA9V1: From a classic Spanish locality. Group of translucent crystals of Quartz slightly smoky, with phantom growths, very well defined faces and edges, and on a matrix of Microcline and Albite (variety pericline) crystals.
The handwritten label of the Folch collection that we'll send to the buyer notes that it was collected by Folch himself in 1917.
La Cabrera, Sigüenza, Comarca Sierra Norte de Guadalajara, Guadalajara, Castilla-La Mancha  Spain (1917)

Specimen size: 9.8 × 6.1 × 4.8 cm = 3.9” × 2.4” × 1.9”

Main crystal size: 4.5 × 2 cm = 1.8” × 0.8”

With handwritten note from the Folch Collection (duplicates)

Twinned Orthoclase

FC58K0: Floater crystal, complete and doubly terminated, that forms a very well defined Carlsbad twin.
Zarzalejo, Comarca Sierra Oeste, Madrid, Community of Madrid  Spain

Specimen size: 3.5 × 3.1 × 1.5 cm = 1.4” × 1.2” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Twinned Orthoclase. Front
Front
Twinned Orthoclase. Rear
Rear
Twinned Orthoclase
Twinned Orthoclase. Front
Front
Twinned Orthoclase. Rear
Rear

FD9K0: Floater crystal, complete and doubly terminated, that forms a very well defined Carlsbad twin.
Zarzalejo, Comarca Sierra Oeste, Madrid, Community of Madrid  Spain

Specimen size: 3.9 × 3 × 1.6 cm = 1.5” × 1.2” × 0.6”

With handwritten note from the Folch Collection (duplicates)


SOUTHERN SPAIN


Almandine
Almandine

RC11P1: Excellent sample both for its size and for the definition of the dodecahedral form.
The label shows that it was collected by Mr. Marçal Lloria in 1973.
Peña Grajera Quarry. Dos Puntos claim, Sierra Albarrana, Hornachuelos, Comarca Valle Medio del Guadalquivir, Córdoba, Andalusia  Spain (±1973)

Specimen size: 7.6 × 6.4 × 6.5 cm = 3.0” × 2.5” × 2.6”

Main crystal size: 6.5 × 5.5 cm = 2.6” × 2.2”

With handwritten note & record from the Folch Collection (duplicates)

Almandine. Front
Front
Almandine. Side
Side
Beryl with Quartz and Muscovite
Beryl with Quartz and Muscovite.
Beryl with Quartz and Muscovite

RC10V1: From a classic Spanish locality. Single crystal of beryl with defined faces and edges and more translucent and bright than usual for the samples from this locality. It's on Quartz matrix and has thin coatings of Muscovite.
The sample is with a card from the Folch collection that we'll send to the buyer.
Hornachuelos, Comarca Valle Medio del Guadalquivir, Córdoba, Andalusia  Spain (±1959)

Specimen size: 7.9 × 4.4 × 3.9 cm = 3.1” × 1.7” × 1.5”

With handwritten note & record from the Folch Collection (duplicates)

Cassiterite with Scheelite

RZ6G2: The locality is very poorly-known and well crystallized samples are very scarce. In this specimen, Cassiterite forms a perfectly defined elbow twin, in a matrix very rich with Scheelite.
Cerro del Vidrio, Montoro, Córdoba, Andalusia  Spain

Specimen size: 4 × 2.8 × 2.3 cm = 1.6” × 1.1” × 0.9”

Main crystal size: 0.8 × 0.6 cm = 0.3” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Scheelite extremely fluorescent long & short UV
Cassiterite with Scheelite. Cassiterite with Scheelite.
Cassiterite
Cassiterite.

RJ6G6: The locality is really unusual for crystallized Cassiterite. Crystal shows well-shaped faces of the pyramid and, less defined, the faces of the prism. The base, very rough, is a contact.
Ceres mining group, Cerro Cobatillas (La Covatilla), Cardeña, Comarca Los Pedroches, Córdoba, Andalusia  Spain

Specimen size: 1.5 × 1.4 × 1.1 cm = 0.6” × 0.6” × 0.4”

With handwritten note from the Folch Collection (duplicates)

Cassiterite

RH26H0: One of the frequent rarities that Folch’s collection contained, in this case for its locality. The crystal is a floater, with very sharp faces and edges with a little coverage of Mica.
Ceres mining group, Cerro Cobatillas (La Covatilla), Cardeña, Comarca Los Pedroches, Córdoba, Andalusia  Spain

Specimen size: 1.7 × 1.5 × 1.1 cm = 0.7” × 0.6” × 0.4”

With handwritten note from the Folch Collection (duplicates)

Cassiterite.
Bismuth
Bismuth.

RX64H8: Excellent thumbnail, very representative for the locality. Free of alteration, it has no real crystals (as frequently happens on this species) but shows a parallel polysynthetic growth of the Bismuth that forms a kind of feather. The specimen has a small matrix of Quartz. It is from a mine that closed a long time ago.
Mina La Espuela de San Miguel, Villanueva de Córdoba, Comarca Los Pedroches, Córdoba, Andalusia  Spain

Specimen size: 1.6 × 1.6 × 2.2 cm = 0.6” × 0.6” × 0.9”

With handwritten note from the Folch Collection (duplicates)

Bismuth

RA76H9: A good sample, very representative of the specimens from the locality. It is free of alteration and although not having visible crystals (which is common for the species) it shows the polysynthetic parallel growth typical for Bismuth, and it has the form of a “feather”. It is from an old mine closed for a long time ago.
Villanueva de Córdoba, Comarca Los Pedroches, Córdoba, Andalusia  Spain

Specimen size: 4.5 × 4.2 × 1.8 cm = 1.8” × 1.7” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Bismuth.
Bismuth
Bismuth.

RD36H8: Excellent sample, very representative for the locality. Free of alteration, it has no real crystals (as frequently happens on this species) but shows a parallel polysynthetic growth of the Bismuth. It is from a mine that closed a long time ago.
Mina La Espuela de San Miguel, Villanueva de Córdoba, Comarca Los Pedroches, Córdoba, Andalusia  Spain

Specimen size: 4.8 × 3 × 2.4 cm = 1.9” × 1.2” × 0.9”

With handwritten note from the Folch Collection (duplicates)

Bismuth on Quartz

RF97K9: Polysynthetic and laminar growths, with a good luster, on a Quartz matrix with small grains of Bismuth disseminated throughout the matrix.
Mina La Espuela de San Miguel, Villanueva de Córdoba, Comarca Los Pedroches, Córdoba, Andalusia  Spain ((01/1963))

Specimen size: 5.4 × 3.4 × 2.8 cm = 2.1” × 1.3” × 1.1”

With handwritten note from the Folch Collection (duplicates)

Bismuth on Quartz.
Bismuth with Quartz
Bismuth with Quartz. Bismuth with Quartz.

RX86R0: Small sharp crystals of native Bismuth, very bright and partially coated by well defined crystals of Quartz. With the Bismuth there are elongated brassy, not well defined, Bismuthinite crystals.
Mina La Espuela de San Miguel, Villanueva de Córdoba, Comarca Los Pedroches, Córdoba, Andalusia  Spain (09/1960)

Specimen size: 6.3 × 4.7 × 5.2 cm = 2.5” × 1.9” × 2.0”

With handwritten note from the Folch Collection (duplicates)

Bismuth with Quartz

RB17S7: A granular massive aggregate with very bright and very well marked skeletal and feathered growths, with Quartz.
Mina La Espuela de San Miguel, Villanueva de Córdoba, Comarca Los Pedroches, Córdoba, Andalusia  Spain

Specimen size: 7.8 × 5.7 × 5.7 cm = 3.1” × 2.2” × 2.2”

With handwritten note from the Folch Collection (duplicates)

Bismuth with Quartz. Front
Front
Bismuth with Quartz. Side
Side
Bismuth with Quartz.
Bismuth with Calcite
Bismuth with Calcite. Bismuth with Calcite.

RB13R0: Granular growths and small sharp crystals of Bismuth that are very bright and partially coated by rhombohedral Calcite crystals, uncommon for the locality, with very well defined faces and edges and, occasionally, skeletal growths.
Mina La Espuela de San Miguel, Villanueva de Córdoba, Comarca Los Pedroches, Córdoba, Andalusia  Spain

Specimen size: 7.9 × 5 × 3.7 cm = 3.1” × 2.0” × 1.5”

With handwritten note from the Folch Collection (duplicates)

Bismuth with Quartz

RE17R6: Growths of small crystals oriented in a socalled "feather" formation. The crystals are very bright and on a matrix with crystallized Quartz.
Mina La Espuela de San Miguel, Villanueva de Córdoba, Comarca Los Pedroches, Córdoba, Andalusia  Spain

Specimen size: 12.3 × 6.9 × 3.1 cm = 4.8” × 2.7” × 1.2”

With handwritten note from the Folch Collection (duplicates)

Bismuth with Quartz. Bismuth with Quartz.
Bismuth
Bismuth.

RA26G8: An historical sample, with a Folch’s autograph note, exactly detailing the point of the mine where it was mined, the gallery and the level and also the month and the year (1959). The sample is a close group of bright deformed and grained crystals, which are sharper in a zone rich on Quartz.
Dolores Mine, Sur Gallery, level 60, Dolores Mining Group, Las Lomas, Pozoblanco, Comarca Los Pedroches, Córdoba, Andalusia  Spain (1959)

Specimen size: 4.7 × 3.4 × 3.7 cm = 1.9” × 1.3” × 1.5”

With handwritten note from the Folch Collection (duplicates)

Blue Topaz

RE6H7: A clear crystal with an excellent color. It has very neat faces and some have have striations and other growth forms. Classic Spanish locality (but not very well known) that produced few samples of such quality.
San Nicolás mining group (San Nicolás Mine), Valle de la Serena, Comarca La Serena, Badajoz, Extremadura  Spain (±1976)

Specimen size: 1.7 × 1.5 × 1.7 cm = 0.7” × 0.6” × 0.7”

With handwritten note from the Folch Collection (duplicates)

Blue Topaz.
Blue Topaz
Blue Topaz.

RF16L9: Topaz crystal with good color and transparence from a Spanish locality that has became a classic. Well defined faces and edges, with thin vertical striations.
The piece is accompanied by a handwritten label from the Folch collection that we will send to the buyer.
San Nicolás mining group (San Nicolás Mine), Valle de la Serena, Comarca La Serena, Badajoz, Extremadura  Spain (±1976)

Specimen size: 2.1 × 2 × 1.5 cm = 0.8” × 0.8” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Blue Topaz

RB76H7: Clear crystal with an excellent color. It has very neat faces and well defined terminations with some different growth forms. Classic Spanish locality (but not very well known) that produced few samples of such quality.
San Nicolás mining group (San Nicolás Mine), Valle de la Serena, Comarca La Serena, Badajoz, Extremadura  Spain (±1976)

Specimen size: 2.4 × 1.7 × 2.1 cm = 0.9” × 0.7” × 0.8”

With handwritten note from the Folch Collection (duplicates)

Blue Topaz.
Blue Topaz
Blue Topaz.

RC12M5: Very well defined crystal with dissolution forms and fibrous white undetermined inclusions. We specially note the locality, the only Spanish locality for gem topaz in notable quantity.
San Nicolás mining group (San Nicolás Mine), Valle de la Serena, Comarca La Serena, Badajoz, Extremadura  Spain (±1976)

Specimen size: 2.5 × 2.3 × 1.5 cm = 1.0” × 0.9” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Blue Topaz

RZ66H7: Clear crystal with an excellent color. It has very neat faces and well defined terminations with some different growth forms. Classic Spanish locality (but not very well known) that produced few samples of such quality.
San Nicolás mining group (San Nicolás Mine), Valle de la Serena, Comarca La Serena, Badajoz, Extremadura  Spain (±1976)

Specimen size: 2.5 × 2.4 × 2.5 cm = 1.0” × 0.9” × 1.0”

With handwritten note from the Folch Collection (duplicates)

Blue Topaz.
Sphalerite
Sphalerite.
Sphalerite

RA11P1: Group of very well defined crystals that came from a small well-documented Pyrite mine not known for well-crystallized samples of Sphalerite.
The citation A. d'Aboin on the label seems to refer to an engineer of the mine.
San Miguel Mine, Almonaster la Real, Comarca Sierra de Huelva, Huelva, Andalusia  Spain

Specimen size: 4.7 × 3.3 × 2 cm = 1.9” × 1.3” × 0.8”

Main crystal size: 1.2 × 1 cm = 0.5” × 0.4”

With handwritten note from the Folch Collection (duplicates)


PORTUGAL


Fluorapatite

RM64L9: Thick tabular Fluorapatite crystal showing with excellent definition the unusual, for the Panasqueira Mine, pyramid faces. With very marked concentric color zoning. There is a chip at the upper right corner.
The piece is accompanied by a handwritten label from the Folch collection.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1972)

Specimen size: 2.9 × 2 × 1.4 cm = 1.1” × 0.8” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Intense zoned fluorescence long & short UV
Fluorapatite.
Fluorapatite with Muscovite, Pyrite and Siderite
Fluorapatite with Muscovite, Pyrite and Siderite.

RQ16G2: Short tabular crystals, doubly terminated, well developed and partially covered by Muscovite. This floater sample was purchased by Folch, in person, from a miner in Barroca Grande, in the year 1965.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1965)

Specimen size: 3.9 × 2.2 × 2 cm = 1.5” × 0.9” × 0.8”

Main crystal size: 2.1 × 1.7 cm = 0.8” × 0.7”

With handwritten note & record from the Folch Collection (duplicates)

Extremely fluorescent long & short UV
Doubly terminated Fluorapatite

RM27F9: Maybe the plate form of this crystal is not common, but it is really a doubly-terminated crystal of an excellent color and size. The sample was purchased by Folch in March 1969 from a miner in Panasqueira.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1969)

Specimen size: 4.2 × 3.2 × 1.7 cm = 1.7” × 1.3” × 0.7”

With handwritten note & record from the Folch Collection (duplicates)

Intense Fluorescence long & short UV
Doubly terminated Fluorapatite.
Fluorapatite with Arsenopyrite and Muscovite
Fluorapatite with Arsenopyrite and Muscovite.

RB76K9: Thick tabular Fluorapatite crystal, with excellent transparency, brilliance and color, with evident geometric zoning. On a Muscovite matrix with small Arsenopyrite crystals.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1972)

Specimen size: 4.2 × 3.2 × 2.0 cm = 1.7” × 1.3” × 0.8”

Main crystal size: 2.4 × 2.4 cm = 0.9” × 0.9”

With handwritten note from the Folch Collection (duplicates)

Fluorescent long & short UV
Fluorapatite with Muscovite

TF46J3: Notable and esthetic group of tabular crystals, doubly terminated, transparent, bright and with zonation of color. They are on a Muscovite matrix with small crystals of Siderite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1979)

Specimen size: 4.5 × 2.7 × 1.8 cm = 1.8” × 1.1” × 0.7”

Main crystal size: 1.8 × 1.5 cm = 0.7” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Intense zoned fluorescence long & short UV
Fluorapatite with Muscovite.
Fluorapatite, Quartz, Muscovite and Turmaline
Fluorapatite, Quartz, Muscovite and Turmaline.

RF16V1: Doubly terminated short prismatic crystals of Fluorapatite with zones of color between green and violet-blue. They are on matrix, with Quartz, Muscovite and small acicular crystals of tourmaline (Schorl-Dravite)
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 4.9 × 4.3 × 3.2 cm = 1.9” × 1.7” × 1.3”

Main crystal size: 2.2 × 1.4 cm = 0.9” × 0.6”

Zoned fluorescence long & short UV
Fluorapatite with Ferberite and Muscovite

TV26J3: Group of very well defined short prismatic crystals, most of them doubly terminated, with a sharp crystal of Ferberite on a side of the specimen.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (10/1965)

Specimen size: 5.5 × 3.6 × 2.6 cm = 2.2” × 1.4” × 1.0”

Main crystal size: 2.2 × 2.2 cm = 0.9” × 0.9”

With handwritten note from the Folch Collection (duplicates)

Intense zoned fluorescence long & short UV
Fluorapatite with Ferberite and Muscovite. Front
Front
Fluorapatite with Ferberite and Muscovite. Side
Side
Fluorapatite with Calcite
Fluorapatite with Calcite. Front
Front
Fluorapatite with Calcite. Rear
Rear
Fluorapatite with Calcite. Top
Top

RE67G0: The crystal is floating, complete and rich in pyramidal forms, rarely seen in Panasqueira specimens. In the tip there is a zone of clearer green, almost white. The specimen, in the back, is partially recovered by Calcite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1967)

Specimen size: 6.9 × 4.1 × 2.5 cm = 2.7” × 1.6” × 1.0”

With handwritten note & record from the Folch Collection (duplicates)

Fluorescent long & short UV
Fluorapatite with Calcite and Muscovite

RT6G8: Group short prismatic crystals, sharp and undamaged, on a matrix rich with Muscovite and small crystals of Calcite.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 7.3 × 6.5 × 4.3 cm = 2.9” × 2.6” × 1.7”

Main crystal size: 1.7 × 1.2 cm = 0.7” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Fluorapatite fluorescent long & short UV
Fluorapatite with Calcite and Muscovite. Fluorapatite with Calcite and Muscovite.
Fluorapatite with Muscovite and Arsenopyrite
Fluorapatite with Muscovite and Arsenopyrite. Fluorapatite with Muscovite and Arsenopyrite.
Fluorapatite with Muscovite and Arsenopyrite

RX36V0: Both tabular and elongated crystals of Fluorapatite on matrix. They have a clear green color with geometric inclusions of deeper color, they are very bright and they have related crystals of Muscovite and Arsenopyrite.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1972)

Specimen size: 9.2 × 5.7 × 3.2 cm = 3.6” × 2.2” × 1.3”

Main crystal size: 1.9 × 0.9 cm = 0.7” × 0.4”

With handwritten note & record from the Folch Collection (duplicates)

Fluorescent long UV & minor fluorescence short UV
Fluorapatite with Muscovite

RF66L9: This sample is a rarity. A very curious combination in one piece of green and blue to violet Fluorapatite crystals. With some slight pyramidal faces less transparent than the prism faces. Crystals are on a matrix.
The piece is accompanied by a handwritten label from the Folch collection.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 5.4 × 4.8 × 2.3 cm = 2.1” × 1.9” × 0.9”

Main crystal size: 1.3 × 1.3 cm = 0.5” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Intense zoned fluorescence long & short UV
Fluorapatite with Muscovite. Fluorapatite with Muscovite.
Ferberite with Muscovite, Siderite and Quartz
Ferberite with Muscovite, Siderite and Quartz. Front
Front
Ferberite with Muscovite, Siderite and Quartz. Side
Side

RM67H3: Excellent crystals, thicker than usual for Panasqueira and with very sharp and bright faces and edges. The faces are partially covered by spheroidal groups of Muscovite and small lenticular crystals of Siderite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 5.5 × 3.5 × 2 cm = 2.2” × 1.4” × 0.8”

With handwritten note from the Folch Collection (duplicates)

Ferberite with Muscovite and Siderite

RZ86I8: Short prismatic crystal, doubly terminated and with parallel growths. On the back it is partially covered by small crystals of Siderite and Muscovite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1980)

Specimen size: 5.5 × 3.7 × 2.5 cm = 2.2” × 1.5” × 1.0”

With handwritten note from the Folch Collection (duplicates)

Ferberite with Muscovite and Siderite. Front
Front
Ferberite with Muscovite and Siderite. Side
Side
Ferberite with Quartz
Ferberite with Quartz. Front
Front
Ferberite with Quartz. Side
Side
Ferberite with Quartz. Top
Top

RM86K4: Closed, dense group of crystals of thick tabular appearance, one of them clearly dominant, with an excellent definition of faces and edges and intense luster. On the backside there is a small Quartz crystal.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1980)

Specimen size: 5.8 × 4.7 × 3.4 cm = 2.3” × 1.9” × 1.3”

With handwritten note from the Folch Collection (duplicates)

Ferberite with Muscovite and Siderite

RE77K8: Tabular crystals, very deep and brilliant black in color with a string of Muscovite crystals in the upper third. Classic for the species, a contact twin on {100} is readily seen by the offset which forms the "ledge" upon which the Muscovite crystals are attached.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1974)

Specimen size: 6.3 × 5.3 × 1.6 cm = 2.5” × 2.1” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Ferberite with Muscovite and Siderite. Front
Front
Ferberite with Muscovite and Siderite. Rear
Rear
Ferberite with Muscovite and Siderite. Top
Top
Ferberite with Siderite
Ferberite with Siderite. Front
Front
Ferberite with Siderite. Side
Side

RA76T5: Parallel growth of flattened prismatic crystals with very well defined faces and edges and partially coated by small lenticular crystals of Siderite.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1966)

Specimen size: 7.3 × 4.8 × 3.8 cm = 2.9” × 1.9” × 1.5”

Main crystal size: 3.9 × 3.5 cm = 1.5” × 1.4”

With handwritten note from the Folch Collection (duplicates)

Ferberite with Muscovite

RG76V1: Parallel growths of flattened crystals. They are very bright, with sharp terminations and are partially coated by Muscovite.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1968)

Specimen size: 7.3 × 5.6 × 2.5 cm = 2.9” × 2.2” × 1.0”

With handwritten note from the Folch Collection (duplicates)

Ferberite with Muscovite. Front
Front
Ferberite with Muscovite. Side
Side
Ferberite with Pyrite and Quartz
Ferberite with Pyrite and Quartz. Front
Front
Ferberite with Pyrite and Quartz. Rear
Rear

RM46Q5: Group of crystals of Ferberite, some of them doubly terminated, with very well defined forms and with pyramidal faces, rare on the samples from Panasqueira. With Quartz and small coatings of Pyrite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1965)

Specimen size: 7.5 × 6.5 × 4.4 cm = 3.0” × 2.6” × 1.7”

Main crystal size: 5.2 × 2.8 cm = 2.0” × 1.1”

With handwritten note from the Folch Collection (duplicates)

Arsenopyrite with Topaz and Siderite

RM46M9: Group of very well defined and bright crystals of Arsenopyrite with small crystals of Muscovite and white Siderite. On the bottom of the specimen there are a group of small crystals of Topaz. Although in the past some Topaz appeared in this mine, they are actually extremely rare.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1982)

Specimen size: 5.7 × 4.1 × 3.6 cm = 2.2” × 1.6” × 1.4”

Main crystal size: 2 × 1.5 cm = 0.8” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Arsenopyrite with Topaz and Siderite. Arsenopyrite with Topaz and Siderite.
Ferberite with Muscovite, Calcite, Pyrite and Chalcopyrite
Ferberite with Muscovite, Calcite, Pyrite and Chalcopyrite. Front
Front
Ferberite with Muscovite, Calcite, Pyrite and Chalcopyrite. Top
Top

RC97X8: Floater parallel growth of two complete Ferberite crystals with quite well-defined acute terminations, not too common at Panasqueira, and with white Calcite crystals, small leafy Muscovite aggregates and isolated crystals of Pyrite and Chalcopyrite on the back side.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1968)

Specimen size: 9.4 × 7.3 × 2 cm = 3.7” × 2.9” × 0.8”

Main crystal size: 8 × 5.7 cm = 3.1” × 2.2”

With handwritten note from the Folch Collection (duplicates)

Arsenopyrite with Siderite and Chalcopyrite

RG76G6: A nice group of doubly-terminated crystals of Arsenopyrite, with typical saw tooth edges and very bright. They contrast with lenticular crystals of Siderite and a little covering of Chalcopyrite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 7.3 × 5.7 × 3.8 cm = 2.9” × 2.2” × 1.5”

Main crystal size: 1.5 × 1.4 cm = 0.6” × 0.6”

With handwritten note from the Folch Collection (duplicates)

Arsenopyrite with Siderite and Chalcopyrite.
Marcasite-Arsenopyrite with Quartz and Siderite
Marcasite-Arsenopyrite with Quartz and Siderite. Front
Front
Marcasite-Arsenopyrite with Quartz and Siderite. Rear
Rear

RF16M9: Very well defined and bright "cockscomb" growths of Marcasite with Quartz crystals partially covered by small lenticular crystals of Siderite and with Pyrite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1982)

Specimen size: 6.6 × 5.7 × 5 cm = 2.6” × 2.2” × 2.0”

Main crystal size: 2.8 × 2.2 cm = 1.1” × 0.9”

With handwritten note from the Folch Collection (duplicates)

Siderite with Quartz

RD60M0: Lenticular Siderite crystals with a marked color zoning darker in the center and light-colored towards the edges. On a Quartz matrix.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 4.9 × 4.2 × 2.4 cm = 1.9” × 1.7” × 0.9”

Main crystal size: 0.8 × 0.4 cm = 0.3” × 0.2”

With handwritten note & record from the Folch Collection (duplicates)

Siderite with Quartz.
Sphalerite with Chalcopyrite, Siderite, Muscovite and Calcite
Sphalerite with Chalcopyrite, Siderite, Muscovite and Calcite. Sphalerite with Chalcopyrite, Siderite, Muscovite and Calcite.

RP66P1: Bright Sphalerite crystal with deep striations and triangular echeloning on its faces. It is with massive Chalcopyrite, Siderite, Muscovite and Calcite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1967)

Specimen size: 7.2 × 6.7 × 5.7 cm = 2.8” × 2.6” × 2.2”

Main crystal size: 4.7 × 3.4 cm = 1.9” × 1.3”

With handwritten note from the Folch Collection (duplicates)

Twinned Cassiterite

RC59I8: Crystal forms a cyclic, dipyramidal twin, very well defined. It has brown color and it is translucent and very bright.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 2 × 1.8 × 1.3 cm = 0.8” × 0.7” × 0.5”

With handwritten note from the Folch Collection (duplicates)

Twinned Cassiterite.
Twinned Cassiterite
Twinned Cassiterite. Front
Front
Twinned Cassiterite. Rear
Rear

TC26J3: A very interesting miniature both for the size of the crystal, considerable for Panasqueira, and because it is nearly transparent and has a very evident twin.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1978)

Specimen size: 2.6 × 2.6 × 2.8 cm = 1.0” × 1.0” × 1.1”

With handwritten note from the Folch Collection (duplicates)

Twined Cassiterite

RX14W6: Group of twinned dipyramidal crystals that are very bright with yellowish brown reflections and transparencies and show fine horizontal striations. We especially note the size of the main crystal which is very big compared with most of the samples from Panasqueira.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 3.5 × 2.6 × 2 cm = 1.4” × 1.0” × 0.8”

Main crystal size: 2.6 × 2.3 cm = 1.0” × 0.9”

With handwritten note from the Folch Collection (duplicates)

Twined Cassiterite.
Cassiterite with Quartz, Dolomite and Tourmaline
Cassiterite with Quartz, Dolomite and Tourmaline. Cassiterite with Quartz, Dolomite and Tourmaline.

RE60V1: Twinned crystals of Cassiterite. They are translucent and bright and are on matrix, with Quartz, Dolomite and small acicular crystals of tourmaline (Schorl-Dravite)
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1972)

Specimen size: 5.8 × 4.1 × 4.5 cm = 2.3” × 1.6” × 1.8”

Main crystal size: 0.5 × 0.5 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection (duplicates)

Cassiterite with Muscovite

RK27T5: Cyclic twinned crystals with sharp and very well defined faces and edges. They are translucent and extraordinarily bright and are on a matrix partially coated by Muscovite. A fine sample of one of the glorious epochs in Panasqueira.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 5.8 × 5 × 4.3 cm = 2.3” × 2.0” × 1.7”

Main crystal size: 1.1 × 1.1 cm = 0.4” × 0.4”

With handwritten note from the Folch Collection (duplicates)

Cassiterite with Muscovite. Cassiterite with Muscovite.
Cassiterite with Quartz and Siderite
Cassiterite with Quartz and Siderite. Cassiterite with Quartz and Siderite.

RK49K4: Great group of flat Cassiterite crystals. They are twinned, very bright and with small, very clear, crystals of Quartz on a matrix with lenticular crystals of Siderite. On the original label is written the year 1964.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1964)

Specimen size: 11.4 × 4.4 × 2.2 cm = 4.5” × 1.7” × 0.9”

Main crystal size: 0.7 × 0.5 cm = 0.3” × 0.2”

With handwritten note from the Folch Collection (duplicates)